The cameras and the film for the Kodak instant line were withdrawn from the market after Polaroid won their lawsuit in the mid to late 80's (I don't remember the exact year). Even if you could find any old stock, the chemicals would be dust by now. I suppose the FUJI 800GT might work, but why bother? Plus, good luck trying to get the 800GT outside of Japan.
You can get an old Polaroid pack-film camera (100 series) for peanuts and shoot the FUJI pack films without any trouble. I've got a 320 that I picked up for less than $20 and it works beautifully.