Oh, running a pawn shop is a fun idea! Would love to see it expanded upon with recurring characters like in Paper's Please. It doesn't feel like there is much risk atm when rejecting because there is a seemingly endless supply of goofy guys (or is it just one?). Still, I was attached to the ones that gave me ridiculous prices, and by injecting that character into them I think that would be awesome. Like imagine a little kid comes up and wants $3 for a priceless artifact. What do you do?
Anyway, the gameplay loop is really solid, so with some balance and polish I could see this being special!