I've been seeing quite a few of the AU20 Bowie discs on Ebay over the last while. Some of these used have been going for over $100US. A brand new boxed set of eight of these went for $500US using the "Buy It Now" in a matter of a couple hours last night. I can see the regular Rykodiscs going higher then the remastered versions because of the bonus tracks. But honestly...for anyone that has one or more...is there much of a difference soundwise or is this just a collecting fad?