I'm really surprised no one has snapped this up yet. [EDIT: It is gone. But you should check out all the other used D&D books in stock!] AC 9 Creature Catalog is one of the classics of the BECMI line, and this copy is in surprisingly good condition given its age. There's still time to take it off my hands, though, as the store sale on all used books lasts until Sunday (May 15th) evening. Use the code Clearance02 to take 25% off all used books currently in stock so I can make room for a new shipment that I just got in.