[quote name='Guerrilla']YMMV. Some GS stores really don't care if they're disc only (but do bring them in a case, even if you don't have the cover art). Others will hit you with a refurbish fee for missing cover art and manual even if the disc is pristine. I've run into both.[/QUOTE]
Same.
At the local store, the manager is a real hard ass on having everything complete, and will dock you the refurb fee for anything you trade in if it is missing ANYTHING.
All of his employees though don't give a shit, and will give you full value, no matter what it comes with or, half the time, even the condition of the disc.
It's definite YMMV and I hate it when I was flipping and it happened because it's not like you pay less for disc only, so why bother charging you a fee for trading in like that?