I was looking for a print copy of Burnt Offerings and found some on Amazon for 54.99. Then I went to Ebay and saw one selling for around $100.
For an OOP RPG book to be sell for over 200% MSRP on the secondary market, means that the product is in fact that good. You are hard pressed to find any 3.x-current WotC book that has that problem.
Congrats Paizo for making a product that is still in demand, and please print more so I can purchase one, LOL