Yep, GS buying EB was the worst thing that could happen for buying used games online, as well as in-store. I'll never order any used games from GS/EB, as I only buy complete games. When EB was separate, all of their then-current generation games (PS2, Xbox, GC) were guaranteed to be complete if you ordered online. Dreamcast games and older could still be disc-only.
I hardly ever go into one of their stores now, getting rid of all the classic systems and games makes the stores very boring, IMO. I only go if I'm going to get a specific game or accessory, or if they're having a B2G1 on pre-played. No reason to browse any more.