If you crave Polaroid film stock, but thought it was impossible to get it anymore, than Urban Outfitters is the site you want to check out. Specifically, this section of their site: UrbanOutfitters.com > Apartment What’s New > Impossible Project. If you want some, I can’t promise you it will be cheap and plentiful and easy, but it will be possible. But, as they used to say: supplies are limited so act now.
Smart People I Know 
I checked this out on September 4th, 2009: film was $28 and the camera + film together was $200 (Canadian currency).