[quote name='DerClaw']Is it pretty universal that they let you trade in and switch them at B&M Gamestops if they are in bad condition? I mean, I have an awful lot of GS's around me, and there is actually one store that is run really well and most of the used games actually are in really good shape.
I'm sure I'd be able to find good copies, if the only hurdle is to be able to find a B&M store with the game.[/QUOTE]
i have yet to find a store that would do this. about 6 months ago i ordered a used copy of jeanne d'arc

, only to receive a disc-only (of course) copy of the DEMO. erg. so i email customer service, they send a replacement, expedited shipping, etc... i'm satisfied. then oops, it's another copy of the demo. this time i'm a little upset. call customer service. guy on the phone is less than helpful. tells me they can't send another replacement so i should try local stores. i use the stock tracker and check the 3 stores within ~25 miles that have it in stock... 1 doesn't actually have it, the other two tell me they can't help me because i ordered it online.

by this time 2 weeks have passed since i placed the original order and my patience is wearing thin. call customer service again. explain the situation, including the d-bag i got the last time i called, and ask why it's so much to ask for the guy in the warehouse to take a peek at the disc before he drops it in the envelope. this time i actually get an operator with a soul who tells me that he'll send out a replacement, but that if it doesn't work this time i'll have to send all three copies back so they can issue a refund and start over... but since i bought it in a b2g1 and used a $10 coupon from a previous purchase, i knew that would be a massive cluster

. luckily things finally worked out though... third time really is a charm i suppose.
tl;dr - gamestop sucks and i wouldn't expect any favors.