He's in high school and got 7.6k usd and is willing to risk it? Its this kind of "lack of realism" which slightly disturbs my sense of disbelief. When I was in high school I'd get like 170-200 bucks every two weeks for my pay check from my part time job, there isn't a realistic way for a minor to save that up unless they are rich and just get it from parents which doesn't seem to be the case here since he was complaining about another rich kid in the first chapter. Then the gambling is excessively reckless when he could just buy the cheapest option straight out and earn enough for better cards later.
Plot armor is just annoying when they make it so obvious. Two 30% cards and a less than 1% card?
