So you traded the games in for store credit and walked out with a T-shirt? Sounds ok, all that stuff's on emulators with various degrees of functionality. Last game I tried to sell 'em was GTA:SA for the PS2, and they wouldn't take it due to the HotCoffee thing, which only applied to PC. Shoulda hung onto Killzone, loved that game, didn't like K2...
Digital stuff's fleeting, I collect vinyl, art and comic books, no sense in hanging onto stuff you're not going to want to play again... and there's so many hungry programmers these days, more than I would've imagined 20-30 years ago.
BlueAlpha14
You trade games at gamestop? For real? Man they're cheap af. You could sell it for a bit more online (especially if someone is a retro game hunter).
vannila-guerilla
The town I'm in is small as hell, so that's not much of an option. The prices I got were fine, though.
However, since posting this I found out they're only giving $30 for Rescue Rangers 2 and $28 for Earthbound. They sell both for $200. That is cheap.