I work in rare books and it's really funny how the market changes based on very arbitrary decisions. Basically, in my opinion, a book is worth however much someone will buy it for. However, it takes only one jackass to list a book on eBay for 5x its price to screw up the whole market. Lets say you all bought your Bellies (which is what I'm calling this silly book from now on!) for around $75US---while in my opinion a good resale price would be around $150, what happens when somebody throws a copy on eBay and asks for $500? Even though it won't sell, you'll likely think, "damn, this could be worth $500!" and probably raise your prices.
I've been amused by this-- here's a book I could walk to Soho and buy tomorrow for $850US.
http://cgi.ebay.com/TASCHEN-THE-BOOK...item45eeb5dba1
Now, what happens when this sells? This seller sold one a while ago for $1500. Forget the $2500 on the listing--is it even worth $1500, if I could just buy it tomorrow for around half that?
...anyways, enough rant! Who knows what anythings worth, right???