There is a code out there that I found on DISboards, it was either REDCARDM or something similar, do a search. It gave me an extra $20 off my purchase, and then just using the redcard saved another $10. I still had to pay for shipping though LOL
Mastercard Marketplace has a code that gives you $5.00 off a $50.00 purchase with free shipping but you have to register your MC. Looks like it expires 3/31/2011. I'd be curious about this one...