I've had mixed experiences in Gamestop retail stores (it mainly depends on the individual clerk) but their website did a good job of fixing a recent screwup.
I ordered used copies of DDR Hottest Party 3 and DDR X2, the latest releases for Wii and PS2. They sent HP3, but instead of X2, they sent Extreme2, an older game that I already have. When I called their 800 number, a very nice woman apologized, said they would send out X2 right away - and I could keep the copy of Extreme2 instead of sending it back. I received X2 a couple days later.
Granted, it probably would have cost them more to have it returned than the game is worth, but still, I'm impressed with their hassle-free service
And with a discount code, I got both games for a total of around $40 shipped
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