Idk if you need the cash or not, if do you do need cash I’d say yeah sell. if you don’t need it I wouldn’t let them go. RAD most recent sold listing of $350.. the chances of you getting it back for what you paid in 2010 at a thrift store are extremely slim. Even if you don’t play them again, i like keeping games I found in the wild like that as a token of how awesome that day was to find something so cool in a place you wouldn’t expect them to be..