[quote name='Bioshocked360']I went to blockbuster and offered to buy some PS3/360 game cases and they gave me some for free. You could try this.[/quote]
^^this
More specifically, wait until there's a huge multi-system release like Madden or whatnot. Stop by there a little more than a week before the release date and ask them about acquiring the cases when they come in. If things are still the same as they were a few years back, they receive the retail copies and have to gut them all to put them in BB security cases, the original cases all get put in big trashbags and thrown out.