I'm not an idiot, how can you claim that based on some OK, admittedly "immoral" ideas. That is even debatable, morality and whatnot, whether we humans have such or are just afraid of punishment. But, another debate for another time.
If I stepped on a card, (I dont think anyone in the world has done that by accident?), it would be my fault yes. But my whole point is that buying from bestbuy + returning will NOT damage the card in anyway if your careful, and all your basically doing is sampling for a card that doesn't have the 4 pipes broken. If Bestbuy wanted, they could sell whatever you returned for no loss, and the person who buys it won't have an problems with the card either. It can be considered like an 9800Se with a failed softmod. AFter the day, no harm is done, and Bestbuy probably could care less.