Headscratchers / Rent-A-Girlfriend

• How much does Chizuru actually make from her job as a rental girlfriend? Considering that Chizuru's popular for a rookie and the prices are rather steep (5,000 yen/hour plus fees), I'm having a hard time believing her and Kazuya's claims that she doesn't make much unless the agency only gives her a small cut of the money.
  • She may mean that she doesn't get to keep much after rent/food/agency fees/anything related to college.
• I did the math, and found that if Kazuya's one-star review bumped Chizuru down .3 points as she says, and was the first less than perfect review she'd gotten, then she only had 12 other reviews (Twelve five-star reviews plus one one-star review equals 61, and if you divide that by 13, you get 4.69). Considering that repeat customers can apparently give multiple reviews, isn't that a low number of reviews for a popular rookie?
• Is Mami really the only girl who's hired Chizuru's services as a rental girlfriend? I can imagine that someone as beautiful and fashionable as Chizuru would inspire Even the Girls Want Her reactions, and as Mami points out, there are probably plenty of lonely lesbians/bisexual women who'd want to use the service to get a taste of going on a date.