As far as silly greedy business ideas went, how about this: Asian-style lottery boxes that contained PC parts , each guaranteed to contain some new graphic card from the last 5 years guaranteed to at least match the minimum requirement of some hot game, and the rest of the components from similar vintage that are at least guaranteed to fit and work together that sells for, say $500, $1,000, or $2,000 each, only differing by chance of getting more recent and higher-end parts. No need to even pick your own.
Bonus points for putting them inside a vending machine. Or even a claw machine that charges $100 per go and adjusted for profitability.