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Karl Marx Hates Your Guts

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"Management has just granted you access to the Trade Terminal. You can now buy and sell minerals, but be warned: Trading is not in your favor — this is not a gift shop."

Karl Marx Hates Your Guts is the inverse of Adam Smith Hates Your Guts. Goods are available and distributed at the same monetary rate everywhere. "Buy Low, Sell High" doesn't apply in such a place. Prices are fixed in such a way that it is impossible to make money by buying something and then re-selling it elsewhere.

This becomes a problem in these situations:

  1. An Entrepreneur Is You. Try to make a profit in this immovable market.
  2. If speculation is unprofitable, making money to upgrade equipment requires going through what any civilian would find immensely dangerous.

This applies only to games or stories where you could make a living as a businessman... if the game did not set up prices in precisely the right way as to make this impossible. The trope is named after Karl Marx, one of the founders of modern communism. This can also, ironically, overlap with Adam Smith Hates Your Guts when there is both a single price no matter where you go and that price rises as the plot progresses (or a variation on that scheme).

This is somewhat Truth in Television as the act of arbitrage will cause prices in various areas to move to one price (the so-called law of one price). However, the way this is handled in games makes this somewhat infuriating, particularly when prices should be different despite arbitrage (or because arbitrage can't happen). For instance, having prices for a night at the inn fixed across the empire makes no sense if one inn is in a major Hub City and another is in some village with a single digit population.

Often a Justified Trope in RPGs, since no matter how much the player is obsessing over the profitability of various sales, the character is most interested in pursuing the plot or his profession as an adventurer and has little interest in trade and Return on Investment metrics. It can also be a form of enforcing a difficulty - if the player can simply buy items for pocket change and sell them at a profit, a dedicated player can easily acquire expensive items that are infinitely useful and thus trivialise a game where resources are limited. It can also be used as an Acceptable Break from Reality, with the prices representing what the character is willing to accept and the designers kindly cutting out the hours he spent wandering the city looking for an inn that only charged what he considers a fair price.


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    Action-Adventure Game 
  • The Legend of Zelda:
    • In The Legend of Zelda: Twilight Princess, the shops have varying selections, but everything that is sold has the same price regardless of where you buy it... with three exceptions: the Gorons who set up shop in Castle Town, who sell Red Potion, Lantern Oil, and Arrows at a 10-Rupee markup from the standard (they call it "regional pricing"); the other shop before it becomes a branch of Malo Mart, which sells a good selection of things, but at a higher price than even the last wallet upgrade can hold; and Malo Market Castle Town, which has the same selection at half the standard price. Of course, you drop some serious Rupees making these discounts available.
    • In The Legend of Zelda: Breath of the Wild, while the selection of goods varies from merchant to merchant, they mostly always charge the same amount for any given item. However, you can sometimes buy items in bundles (typically arrows), for a discounted price. There are exceptions to this, however, due to some of the traveling merchants:
      • Kairo, a Goron who walks around between the Maw of Death Mountain and Foothill Stable, sells Topazes, Rubies and Sapphires for significantly less than the ore shop in Tarrey Town.
      • Agus, who walks around between Duelling Peaks Stable and Hateno Village, gives a lowers his prices by two rupees if it happens to be raining.
      • Yammo, who travels throughout the Ridgeland region, actually charges two rupees more than usual for his wares when it's not raining. When it is raining, he'll sell Goron Spice at a slightly lower price than the shop in Goron City does.
      • There are a few Yiga Clan members who disguise themselves as normal-looking merchants. When you speak to them, they will offer to sell you Mighty Bananas for the extravagant price of 99 Rupees each (they can be bought in Gerudo town for 20 Rupees). While you can buy them, the Yiga member will still attack you afterwards. Humorously, the Yiga member has an inventory of 99 Mighty Bananas, and will sell you as many as you're willing to buy before attacking.
      • There are a few fetch-quests where characters will ask you to bring them a specific item. In return, they will pay you an amount higher than the market price. They'll usually offer to keep buying more of that same item, but they usually will not pay you quite as much as they did the first time around. They still tend to pay more than the shops typically would.
      • On that note is Ledo, a Zora who will at first offer to trade you two Diamonds in exchange for ten Luminous Stones. While this is a good deal, any subsequent exchange will only yield one Diamond for ten Luminous Stones. Although Diamonds can be sold to vendors for 500 Rupees a piece, the ten Luminous Stones that you might otherwise exchange for a Diamond can instead be sold for 700 Rupees. Mind you, it's not a terrible deal if you desperately need Diamonds for crafting or armor.

    Idle Game 
  • Warzone Idle has markets from which the player can buy resources. The original implementation had them sell at a fixed price much higher than the player could sell them for. This was changed in an update so that the initial price now starts lower and increases as the player buys from them, which meant that the player could make some profit but not an unlimited amount.

    Mecha Game 
  • Armored Core is this in spades. No matter how ravaged the land due to war is, that little missile launcher will still only cost you 12000 Coams all the time.

  • Kingdom of Loathing has a "mall" where players can sell items to other players. This trope often ends up being invoked, because all items have a minimum sale price (100 Meat or twice the NPC-sell price, whichever is higher), and for most items, the ideal price (where demand matches supply) is much less than this. Selling these forcibly overpriced items in the mall is impossible, unless you spend ridiculous amounts of money on advertising so that your store appears above the thousands of other stores selling the same thing at the same price. Even then, there's usually no way to sell such items for more than you paid for them elsewhere. (Through the mall, at least. The best way to sell such items is by looking up who has the most of them in their public Display Case, and individually ask them whether they want to buy your stock directly, without involving the Mall.)
  • In World of Warcraft, vendors pay 25% of the selling price of an item, if you're allowed to vendor it at all, and all vendor-bought items cost the same everywhere (subject to reputation discounts). Sources of income are quests and Money Spiders. That said, the player-driven economy is vibrant and can be highly profitable.

  • While the economy for player fortresses in Dwarf Fortress is disabled and pending a significant retooling, with foreign merchants (the ones you visit in Adventure Mode) all prices are fixed no matter where you are, based entirely on material and quality, and every non-worthless item has a minimum value of 1. So while you can't turn a profit on bought goods, even if they're from the other end of the world, you can make money selling found/stolen goods even if they're literally found in infinite quantities laying around on the ground in front of the buyer.
    • Buying raw materials and turning them into manufactured goods to sell at a profit still works quite well in Fortress Mode, though.

    Role-Playing Game 
  • Merchants in Albion may have varying prices. Some even have two separate inventories for selling and for buying that have different exchange rates, but the rule of thumb is that regardless of the exchange rate, they will give 20% less for everything you sell them, then what they would ask when you're buying the same item. The way it's set up, buying something from the cheapest merchant then reselling it to the most expensive merchant will most likely get you the price back, but not much more. On the other hand, there are a LOT of merchants who are more than willing to buy your hard earned loot and Shop Fodder, for pocket money (read, half the price an average merchant would give you).
  • Anachronox follows this fairly straight with the regular merchants, but averts it with the robot traders on Sender Station. (They're not trading in robots, they're actual robots who trade stuff.) They only trade various useless luxury items (and also lifepetals, but you need them for other things) but each have different price listings. Simply buy as much as possible of a ware where it's cheap, then hoof it over to the one who buys it for a high price. Then repeat, but now you can buy even more. If you can stand the repetitive clicking, you can make your party economically independent in less than thirty minutes. And you can always go back if you need more.
  • Completely averted in Atelier Lina. The price of goods fluctuates year round, and buying stuff in one town to sell in another town is the fastest, easiest and most profitable way to make obscene amounts of cash in a very short amount of time.
  • Chrono Trigger gets particularly insane. You would expect that prices would increase over time, the business with Lavos in 65,000,000 BC, 12,000 BC, and AD 1999 causing various economic crises, right? Right? Wrong. A Tonic is a Tonic is a Tonic, regardless of the time you're in. Even in 65,000,000 BC, when gold is a "shiny stone".
  • Unintentionally averted in Dark Chronicle. With the exception of gold bars (which buy and sell at the same price), the game plays this trope straight. Except that a certain golf club that sells for 230 gold can be made for only 90...
  • Dragon Age: Origins — sale and purchase prices are identical wherever you go in the world (even though availability varies), and the only crafting item that makes a profit (i.e. the finished product can sell for more than the components cost) are high-tier Lyrium potions. One merchant in the entire game averts this, and only if you're a Dwarf Noble.
  • Dragon Quest:
    • One town in Dragon Quest IV is short on armor for a while, and will buy armor for far more than it costs, at least until each type of armor is sold enough. The merchant Taloon is also able to invert this for a time during his chapter after setting up his own shop: his wife will sell any goods you give her at a much higher price than any of the other shops around. Lady must make one hell of a sales pitch. Needless to say, this can be abused to Game-Breaker status, if you know how to work the system. Earlier in the same chapter, Taloon is a salesman at a weapons shop, and can haggle with customers to get more than the usual price. Or to prevent them from buying an item that you want to buy yourself.
      • Also averted somewhat in that the Casino charges different prices for gaming tokens depending on what chapter you are in. The cash-strapped Tomboy Princess gets discounted tokens for only 10 gold each, whereas the aforementioned merchant has to pay 200 gold each. In the final chapter, the Hero's party pays 20 gold each. This is important because regular cash doesn't carry over from chapter to chapter, but casino tokens do. Thus, it's in your best interest to convert as much money as possible into tokens (which can be used to purchase some of the best equipment in the game if you accumulate enough of them) before completing the chapter. Since a patient player can accumulate an endless supply of gold via Taloon's shop, it would be something of a Game-Breaker if tokens were being sold at the normal price.
    • Simultaneously averted and played straight in Dragon Quest VIII. Thanks to the alchemy pot, you can buy and combine certain ingredients to make potentially hefty profits, but only a certain amount of times that varies by item. Doubles as a Guide Dang It! on two fronts as there's no indication of what is profitable until you have already made it and nothing letting you know how close you are to an item's sell price decreasing.
  • Averted in EarthBound Beginnings. Eventually, you encounter a man who will fill up your inventory with mouthwash, and his assistant will sell you more for only $10 apiece. If bought from anywhere else, Mouthwash costs more than fifteen times that amount, yet the mouthwash you get from the man can be sold for the normal price of half what it's worth at the store, thus allowing you to make a pretty good profit.
  • The Elder Scrolls:
    • The series in general is a rather egregious offender considering one of the big selling points is being a Wide-Open Sandbox that allows for more playstyles than simply endless dungeon-crawling. However, you're pretty much limited to alchemy and thievery. (And thievery is less lucrative than it may sound because few homes have items of real value, leaving you to max out your carry weight with stolen Shop Fodder in order to turn a profit.) While it would make sense that items would be cheap in the big cities' trade districts and more expensive in little podunk shops with supply problems, prices are set by item so they remain basically the same, excepting some skill-based variation and how much the merchant likes you, no matter who's selling.
    • Alchemy, as mentioned, is one major exception. It is possible to buy cheap, infinitely restocking ingredients from an alchemist/apothecary, turn those ingredients into a potion, and then sell the potion back for more gold than the ingredients themselves were worth. The only thing keeping this from being an infinite source of income is having to wait for the merchant's stock of gold to regenerate after 24 in-game hours.
  • Inverted in Fable, where the buying/selling price of an item is inversely proportional to how many of that item the merchant has: with enough of one item, the player can buy a merchant's entire stock, then sell it back to them at a profit.
  • Fallout:
    • Averted in Fallout and Fallout 2. The price you sold things for was fixed (RadAway always sell for 500) but the buying price varied depending on your Barter skill, reputation, and the general disposition of the merchant in general. In several cases you could actually selling things for more than you bought them from the same vendor, allowing you to literally clean out the store by buying everything and selling back smaller and smaller shares until the merchant was left with a single chip or a worthless junk item.
    • Fallout 3 and Fallout: New Vegas have variable buying and selling prices (as your Barter skill improves, both of them converge on the "true" value of the item). However, location and relative rarity don't factor into it; Little Lamplight might be the only place you can find radiation-absorbing superfood Cave Fungus, but the traders in the next town over will pay just as much as the ones all the way across the map. Certain communities will offer rewards for specific resources they're short on (Little Lamplight needs "Strange Meat" to grow the aforementioned Cave Fungus) but only if you give them to the right person — the town merchant will offer the same price as they would anywhere else.
  • In Final Fantasy games, items can generally be sold for half the purchase price.
    • In Final Fantasy VIII, the player can learn the "Buy Low" and "Sell High" abilities of the Tonberry GF, which allow the player to buy and sell items at 3/4 the standard price. With those abilities and the Carbuncle GF's "Recov Med-RF" (Recovery Medicine Refinement), you can buy Tents and Cottages, turn them into Mega-Potions, and sell those for about a 20% profit.
    • Final Fantasy IX has the so-called Cotton Robe trick, wherein you can buy Wrists (for 130 gil), Steepled Hats (for 260 gil), synthesise them into Cotton Robes (for 1000 gil), and sell those (for half the 4000 gil purchase price, 2000 gil). Result: 610 gil profit. By two more iterations you'll have enough profit to process Cotton Robes two at a time for 1220 profit. Twenty goes can turn an initial 1390 gil into over 1.3 million.
    • Final Fantasy X-2 has a Game-Breaker exploit that happens early in the game: if you rescue merchant O'aka from his creditors and then buy enough from him to pay his debts, he rewards you by selling things to you at a discount... which puts every object at a lower price than what the bartender right in front of O'aka buys from you. Buy 99 of everything from O'aka, sell to Barkeep, and see the money rake in.
  • Fuga: Melodies of Steel 2 introduces a new monetary system as opposed to the first game's bartering system, but no matter which town you stop in or which airship service you request, all items are priced the same and remain that way throughout the entire game (the only exception if you're lucky enough to pass by a pedestrian who will give you a coupon for the next town... but for only one of the three shops). This becomes a major issue early on and even later in the game, as it's very easy to run yourself into the red buying the materials needed to upgrade your tank or recovery and battle items to make the next chapter easier, with your only method of gaining Rings is through selling trinkets found at random throughout the chapter or in expeditions, as selling whatever items you no longer need becomes pointless due to the pocket change they give you in exchange.
  • Particularly bad in Geneforge: While the price to buy a good may vary from town to town, the price you get selling that good is the same everywhere, and it's less than the cheapest amount you'll pay to get that good.
  • The Legend of Heroes - Trails: In several games, while you can't buy Honey Syrup for cheap and sell it for a profit (which you'd think would be logical since it's made in the former and the latter is a remote area that has to import everything and a sidequest actually makes a point of how profitable the stuff is when exported) you can derive a profit from your labor with certain cooking recipes that sell for more than the cost of the ingredients needed to make the items. You can also derive a profit from selling the fish you catch.
  • In most Pokémon games, shops will typically buy items from you at half their retail price. However, due to an endless promotion, the Thrifty Megamart in Pokémon Sun and Moon and Pokémon Ultra Sun and Ultra Moon will always give you back half the money you spend there as a rebate, yet will still pay you the standard rate for anything you sell to them. You can effectively get free, unlimited Premier Balls here by purchasing standard Poké Balls in groups of ten for $1,000, pocketing the free Premier Ball, then selling back the ten Poké Balls for $1,000. Repeat as much as you so desire. On top of all this, you can sell back the Premier Balls for $100 each. It's a slow, monotonous process, but you can essentially get unlimited money through this method.
  • In Guadia Quest of Retro Game Challenge, there are bars of precious metals that sell for the same price they cost. However, these are useful, as they prevent you from losing half of your money if you are wiped out. Various gems you can buy in the brutally difficult The 7th Saga work the same way, which is where they likely took the idea from originally.
  • Averted in SaGa Frontier for Gold Ingots, which will rise in price the more you buy and drop in price the more you sell; in fact, you can abuse it to make yourself obscenely rich.
  • Averted in Secret of Evermore: In the same bazaar where you get the trading quest chain, there are loops that allow you to gain money (by buying cheap goods, trading those goods for more expensive goods and then selling the more expensive stuff to an appraiser).
  • Full on averted in Sid Meier's Pirates!. The prices of each good vary from port to port depending in unchanging factors such as what they produce and what they need, which usually match up with the actual history, and variables like the wealth and size of the town. It's possible to play a straight up trader, or to attack shipping routes to drive the wealth of a city down, or even play protectorate and nurture a few cities into wealth.
    • And it's not just wealthy towns that are good business. While a rich town may want sugar and spices, poorer towns will want Goods and other such commodities. Then again you could just attack ships and duel people.
    • Few things are more disheartening in the game than returning from a long voyage to discover than pirates have pillaged the town and rendered your cargo of sugar near worthless.
    • The only real problem with the game's trading mechanism is that it takes ages (as well as a huge fleet of slow and not very powerful trading vessels) to make even close to as much money as a single small combat vessel can accumulate from simple raiding — and a consummate pirate or explorer can acquire more wealth in a few years than a consummate trader could make in a lifetime. Nonetheless, even a pirate would do well to know where best to sell commodities captured off enemy ships, and to consciously set up ports as described above near his favorite hunting grounds.
  • Generally played straight in Star Ocean: The Second Story, but a noteworthy inversion occurs in the Bonus Dungeon via the infamous "Ripping Off Santa" trick — you can buy Sage's Stones from Santa for 50,000 FOL, then immediately sell them back to him for the same price, and if you have a certain skill, you can sell them back for up to 65,000 FOL each.note 
  • Partly averted in all Suikoden games since II with regard to trade goods, where you can buy low in one town and sell high in another. Played straight with most items, of course.
  • Super Mario Bros.:
    • Averted in Paper Mario, where it's possible to buy items in one town and sell them at another town for a profit. One of the possible ways to do this in Paper Mario: The Thousand-Year Door is told to you as payment for a side quest. "Go to Petalburg, buy a Sleepy Sheep, go to Rogueport, and sell the Sleepy Sheep for a two-coin profit!" Using logic and the principle of supply and demand and how it affects price, this can be cranked up. In Keelhaul Key, buy Fire Flowers. Sell them in Fahr Outpost for a 3-coin profit. Before leaving, buy Ice Storms, which sell for a 4-coin profit in Keelhaul Key. It's easy to make money in the late game without killing enemies for it.
    • Mario & Luigi:
      • Sort of averted in Mario & Luigi: Superstar Saga though, where your Stache stat dictated how much things cost in shops and how much you'd get if you sold them back. So if you raised your stats high enough you could make a tidy profit, although it wouldn't be in a particularly realistic way.
      • Played straight in Mario & Luigi: Dream Team, where every item and piece of gear costs the same across the entire island. And the shops only start selling more advanced stuff as you personally progress through the story, so literally nowhere in the world sells anything you'd need in the final dungeon before you reach the final dungeon. It is sort of explained by how there's literally just one brand of shop in most places though, with an identical design, shopkeeper and goods selection.
  • Inverted in the Tales Series, going all the way back to Tales of Phantasia. You can break the game's economy horribly by buying and selling stuff in bulk in the right towns.
  • Played straight in Xenosaga, in which all goods cost the same amount of money everywhere, and no goods ever increase in price. Acknowledged and possibly averted somewhat be a subplot that involves possible cuts in price depending on free-market investing on Shion's part.

    Simulation Game 
  • Aerobiz: Though you can sell old aircraft to "World Lease" at half-price, you can never purchase any used aircraft to bolster your fleet, and all aircraft are sold at a fixed price which never moves even as the design ages.
  • Nook and Able stores in Animal Crossing series buy everything for one-fourth the selling price. In games with the periodic "Flea Market" event, NPC neighbors will pay about twice that. With the exception of white turnips and fruit, which are hard to take advantage of without multiple systems and multiple copies of the game, the price for everything is the same in every town. So the primary way to make money is to pull Shop Fodder off the trees or out of the river, and that's rate-limited by the system clock.
  • The trade system in Pharaoh. Caravans come to and fom the city, so the prices for buying and selling items are fixed (unless Ra is available for worship, one of his blessings lets you sell at 150% for a while), and while you can import items and sell them later, the result will always be a net loss (unless you've somehow obtained more than you started with, through the generosity of your neighbors). However, one of the main ways you're supposed to make money is to buy raw materials (clay, barley, straw...) and sell the (much more expensive) finished product (pottery, beer, meat, bricks...) via Refining Resources.

    Tabletop Games 
  • BattleTech roleplaying spinoff Mechwarrior has this with its gear; there's a listed base price for equipment and general availability ratings to determine how much it might cost to buy on top of base price, but there's precious little about actually selling various looted or salvaged bits of gear back to the markets for anything but (perhaps a fraction of) market price, even though interstellar travel and trade was a given in the setting. No investing in trade commodities or interplanetary mercantile work for you. There's a good reason for this early on, since up until about 3rd edition, the game was very deep in its tabletop wargame roots versus acting as a roleplaying setting with a viable economy. The setting generally more concerned about its Humongous Mecha fights for obvious reasons.
  • In Dungeons & Dragons, everyone uses the same currency and goods tend to cost the same everywhere. Pretty much an Acceptable Break from Reality given how much trouble having to exchange bits of your vast fortune everytime you left the country would be. Not to mention that sheer amount of head-scratching that goes into a spell that costs "20,000 gold pieces worth of diamonds" when the amount of actual diamond that is varies wildly depending on how you calculate it.
    • There still ends up being little holes in the game's default price lists that allow for capitalist enterprise (assuming the DM is a pushover.) For example, a ten-foot pole costs four times as much as a ten-foot ladder, so even if you can only sell items at half price, you can turn a profit by buying ladders, breaking them up into two poles each, and selling them.
      • Averting Cut Lex Luthor a Check with spells, a character could fill a warehouse with trade goods with Fabricate. Just hire near free unskilled laborers to collect the raw materials, spend a minute casting the spell, and then have a couple of skilled workers to handle the books and some guards. You'll make thousands. If you also know how to make masterwork weapons or alchemy, dropping masses of masterwork longbows or alchemical goods on the city could be even more hilarious. Offer to equip the king's archers for half cost. Since Karl Marx Hates Your Guts and you can only sell them at half price, you should sell them in no time flat. The spell costs 1/3 the value of the goods to create them and you are forced to sell for half, but remember — you can make 90 cubic feet of goods in a single casting at the minimum level. Or 9 cubic feet if you make minerals. That's about 4,400 pounds of steel goods. That's almost 9,000 masterwork daggers, if you are good enough to make them. Dozens of spells are ripe to be abused through these kinds of mechanisms and are not so absurd as cornering the ten foot pole market.
    • In 4th edition this gets even worse: you are not allowed to sell an item for more than 20% of its buying price. This is because enchanting magic items is much easier and cheaper in 4e than previous editions, but you're supposed to be exploring dungeons, not mass-producing +2 longswords.
      • This particular quirk might be explained if the adventurers always purchase magical items "on commission" — if there is low market liquidity, you might have to lower prices a great deal in order to move surplus stock quickly, and most items purchased will be made-to-order rather than off-the-shelf. (This may be giving too much credit to the game designers.)
      • The official handwave for the low selling price is that trafficking in magic items is very risky and expensive — it's hard to find buyers since adventurers are rare, and magic items are high-profile targets for bandits and thieves.
      • This leads directly to one of the worst aspects of the 4th edition: The official adventure paths are VERY stingy with giving out magic items to the players, only one in every couple of encounters. Every player needs at least three magic items (Weapon, Armor, Amulet) to be up to date to be competitive, so it hurts a lot more than in previous editions if you happen to find an item you cannot use. Like, finding a +3 Longbow when no one in your group is an archer. If you try to sell or disenchant the item you only get 20% of its value, which makes this highly ineffective, and you lose a valuable item without getting a proper compensation.
      • Magic items are intended to be rare and you aren't supposed to be required to have them at all. During third edition, a vicious circle developed between magic items being too easy and enemies being balanced to acknowledge how easy magic items were to get, which led to magic items being even more common for defeating those enemies causing even more powerful enemies with even more powerful magic items to emerge.
      • It also makes rust monsters, formerly one of the most frightening creatures to a fiscally conscious adventurer, into an extremely useful pet. In 4e, magic items can be disenchanted by a ritual that yields a powder containing about 20% of the magic essences needed to make the item. However, if a metallic magic item is fed to a rust monster, it leaves all the magic behind in powdered form.
      • Specifically player characters actually are expected to acquire magic items over the course of their career; there's even a bit of a magic-items-by-level formula for that in the Dungeon Master's Guide. The twist is that the DM is also encouraged to make those supposedly randomly found items ones the group actually can use (otherwise why count them towards the quota?)...which is something that "official" modules, necessarily written without foreknowledge of who'll end up running through them exactly, naturally have trouble with.
    • Lampshaded in this Full Frontal Nerdity strip. "How does that make economic sense? You'd need state funded wizards cranking this stuff out!"
  • Ryuutama plays this straight with most items, but averts it with regional specialty goods. While most items can only be sold for 50% of their listed price regardless of circumstances, specialty goods can be sold for 100% of their price in any town except where they were bought. Furthermore, characters with the Trader skill can attempt to haggle the price in their favor when buying or selling a large number of goods, so it is entirely possible to earn money by trading items between towns.

    Turn-Based Strategy 
  • In Lords Of The Realm, not every merchant charges exactly the same prices for the same goods, but merchants will never offer to buy goods for a higher price than another merchant is selling them for, so it is impossible to make money by buying low and selling high. This is true even if the merchants are in completely different counties within medieval England, such that you would think that geographic differences would cause price differentials. Also, prices never fluctuate, so, no matter how much of a particular commodity you buy or sell, the price will never change.

    Wide Open Sandbox 
  • Completely averted in Elite, which is kinda the point of the game.
    • Played straight, however, if you try intra-system trade in Elite 2 or FFE. The prices on all planets of the same system are the same, unless some commodity is in dire need somewhere (but then again, most likely this commodity is unavailable on any planets of this system). The only ways you can make money without FTL travel are mining and waste disposal, and both have very low profits.
  • Similarly semi-averted in the Escape Velocity series. While ship upgrades cost the same wherever they are available, trade goods are available for different prices on different planets, and random events can drive the prices further up or down. Certain routes are known to be such good money generators that cargo space itself will quickly become the limiting factor in how rapidly you can accumulate wealth (with a 50% margin between buying at "lower" and selling at "higher" it becomes a matter of finding an expensive enough good to fill your hold with for it to even be worth your time later on).
  • Played painfully straight (and probably intentionally so) in the S.T.A.L.K.E.R. series. Accidentally buy a hideously expensive set of armor you didn't want? Good luck selling it back for even ten percent of what you paid, no matter who you try to sell it to. Selling looted guns and ammo seems like a good idea, until you find out that the more damaged an item becomes, the less valuable it is, and nobody maintains their weapons. Selling ammo can help, but it's not really efficient considering how much you have to sell versus how much you find by looting. In later games, items below a certain threshold can't even be sold, and repairing the guns to sell them costs more than it yields. Somewhat justified in that there's tons of guns to go about in the Zone, but it's the artifacts that are really valuable.

    Genre Defying 
  • In the browser game Cookie Clicker, buildings are sold for half the price of the next building of that type, or 57.5% of the cost of purchasing that building.note 

    Real Life 
  • Who said this is an Acceptable Break from Reality? In plenty of markets, an individual has a heck of a time trying to sell a good for the same price as retail. Consider your brand new car — as soon as you sign the contract, the car loses approximately a quarter of its value before you've driven it off the lot. Consider rare cards in a CCG, mint condition comic books, used video games, used power tools, used firearms, second-hand clothing, and similar markets, where retail stores can sell desired goods at a higher price than a private person will get. Consider pawn and consignment shops, which will give you less than they will turn around and sell your things for. Those middlemen provide a valuable service; they allow buyer and seller to hook up without putting in the effort to find each other or even having to want to buy and sell the same thing at the same time. The mark-up they charge is how they get paid for that service. This trope is in full effect. Getting around this trope means (usually) becoming a retailer yourself instead of following whatever other adventure you're on.
    • Averting this trope, however, you occasionally can turn a profit by exploiting others' ignorance or moving between markets. For example, it may be that a collectible figurine sold in one country can be sold somewhere else second-hand for more than the purchase price. Then there are the real and artificial shortages that could be exploited, such as those that let ticket scalpers or eBayers sell hard-to-get tickets or must-have Christmas gifts for a tidy mark-up. Christmas 2016, for example, saw a huge shortage of the NES mini and outrageous prices for them on eBay.
  • Zig-zagged in real communist societies. In theory prices everywhere were equal so there was no incentive to try this sort of thing and on paper it could get you imprisoned anyway. In reality you could bribe a clerk in Moscow three rubles to steal a product that is overstocked and would theoretically cost ten. You could then move it to another town where it also theoretically also cost ten rubles but was perpetually out of stock and sell it for twenty rubles. Alternatively, you could often just wait in line and trade goods with people who didn't want to bother. The Soviets and their satellites didn't approve of these behaviors, but often turned a blind eye to it because it meant less work for their bureaucracy.

Alternative Title(s): Always Five Gold Pieces