A while back, I noticed Amazon.com was randomly manipulating prices on certain items; I called them on it with an email, their response was that they were testing "market value" or some such. I don't know if they're still doing it, because I'm sure their customer service got lots of angry complaints from other people who'd discovered the same thing. (Rather stupid of them to do it, too, since people discovered it by comparing the price with each other online.) Still, I'd imagine theres places where it's going fairly cheaply. Try doing a google search and see what turns up.