The grand prize for book collectors out there is the First Edition, SIGNED by the author. Of course, not all book sellers are trustworthy, so you need to do your research to make sure the signature is authentic.

Here is a great little site what gives samples of author signatures to help you ensure you’re getting what you pay for!

http://www.purplehousepress.com/sig.htm

It has been estimated that a whopping 80% of all signed books available online are fakes, so please do your research, and only buy from sellers you trust.