[quote name='Scorch']I've never, ever understood this question.
They're used games. Used games come from the customer. There's no appropriate measure on whether or not they'll come in "great" condition. It's all a matter of whatever the employee picks and ships in the store. I'm sure they'll buff it out before they send it, but no, there's no 100% guarantee that you'll get a great condition game. Ever. Anywhere.
PV are formal rentals, used are games that customers have traded in.[/QUOTE]
There is a measure. Different retailers have different standards for accepting used games from consumers. Back when mom and pop game stores existed around my area, they only accepted good condition used games with the box and manual. Thus, when I bought from them, I knew I'd always get a used game in good condition. gamestop on the other hand is lax, thus, what you say, that you just can't really know IS the standard that you can expect.
Another example. Gamefly can sell games in really bad conditions. Scratches, chips on the discs, etc. Amazon doesn't tend to, as far as I know, accept used games in that condition so you could compare the two saying "You have to be lucky to get a used game in great condition from Gamefly but with Amazon you can usually expect pretty good condition used games." You can nevr expct a certain condition with 100% certainty but knowing others' customer experiences helps guate the usual quality and that matters to some people.