First resort: Amazon
Last Resort: Gamestop
There really aren't a whole lot of game and game merchandise retailers around here, so I usually check Amazon or go to Gamestop. As much as I dislike Gamestop's exchange process (So, you can sell me a broken used console, but when I try to sell you a beat up but still working console, you reject me? What ever happened to refurbishing?) and used game buying/selling, I sold a game there for about $4.50 once, and saw that same game a week or two later for $20, I know they're trying to run a business, but shouldn't I get at least half for a game that I sold them? I do like my local Gamestop's employees though, they're very nice people.