[quote name='52club']Bought my last 360 for the exact same reason. You can just bring it back to the store to receive credit for your purchase price. They refuse to do exchanges so if there have been any price drops it is $$$ in your pocket.[/quote]
yep. i got the COD4 bundle there last year, and when they got the 60g in stock i asked if it was ok if i returned my COD4 bundle ($439) and got the new one, and they said that would be fine so i did. plus, the price dropped, so i got the 60g bundle ($349) and got COD4 on sale ($39) at GameStop, so i ended up with a Falcon (the one i returned was a Zepher) with a 60g HD and and $50 in my pocket...
the only thing that sucks about Costco is that they don't always have 360 systems in stock, so if you do have to return your system and they don't have any in store, you're stuck either ordering one on their website (and more importantly stuck paying shipping) or waiting for them to get them in stock again, which could take some time...