¥10,000 in a single day isn't even that much; it's like $100 a day, which is what most High School part-timers make, at least in Canada. Now, that ¥1,000,000 down payment she got...that's like $10,000; that's more like it
I thought it wasn't a down payment but a lure. "I actually have this much money, and I'm willing to dribble it out to you date by date."
Also, high schoolers make $100/day? In the US minimum wage is $7.25/hour, you would need to work nearly 14 hours to make $100 in a day. Even at the $15 a few places have gone for, or proposed, it would be 6.7 hours. Seems intense on top of school.
Granted there are weekends. Marika will make $700 a week if they date every day. At $7.25/hour that's 96 hours of work in a 168 hour week; at $15/hour that's 47 hours. Full-time job is 40 hours/week.
Canadian minimumwages seem to be between CAN$12-15, but that's US$9.6-12.
If they kept the arrangement indefinitely it would US$36,500 a year. Part-timers get that?
And it's cash, so probably Marika can avoid paying taxes.
Of course, all that is the original proposal; by the end of the chapter it's turned into a $10,000 bet, with no guarantee Marika would actually get paid even if she didn't 'fall'.