The big rip off is in the marketplace on Amazon, Play.com and the like...
Today I was looking at a used book on Amazon (price £0.01 + £2.75 shipping since you ask). Along with the £0.01 copies, there were obviously others up to about it's true value of £3-4 + shipping. Then on the end one for £1000.00 (plus £2.75 shipping). I had a think about this and then tried a few random "add to baskets" and eventually I think I've revealed the truth... people are adding these stupidly overpriced things in the hope that someone does the "add to basket" and checks out before they spot the massive price tag...