I kind of felt mildly tricked recently. My wife and I went to Gamestop and she decided to buy me a game to play while recuperating. I chose my game, Dead Space 2, and she took it up to the counter while I continued to browse. After a moment she asked me if I wanted a used copy for $15 less and I said sure, i don't care, not even thinking about it. Why make her spend $60+ when she can spend $45 and tax? Wasn't til I got home that I realized that I couldn't access the online stuff without paying another $10 anyway. It's not a big deal, because most likely I never would have utilized it anyway. However, the cashier did NOT mention to my wife that she was purchasing a game with "less product", let's say, when purchasing a used copy.
He should have let her know and then she could have asked me or made an informed position. Instead, I wasn't paying attention and I said do whatever, so of course he sold her the used copy.
He definitely either either wrongly assumed she knew all about what she was buying or he glossed over the facts due to her naivete.