Considering the scratch-rate of the CE's, it would actually be quite fun to go there and give them the ol' search & deny treatment they give their customers when trading in used media.
Bring one to the counter, ask to inspect it before purchasing, and if you see any scratches on it (from what I've heard, I don't know how there couldn't be any), say "Nope, sorry, I can't take this, it's scratched."