The last 20% off sale, I put 7 games in my cart, and I remember seeing all 7 at the "is this all correct?" order screen, but I only got 6 in the mail. Looked back, and sure enough, only six were ever officially ordered according to the confirmation email. I had trouble with items disappearing randomly from my cart during that sale, and I guess it happened right at the end, too. Can't believe I didn't catch that in time. That and the expensive shipping has soured me on them for a while.