I purchased a copy of The Da Vinci Code at a book sale to resell online. On the title page of the book is this ISBN 0385504209. The book is a trade edition size paperback but the ISBN on Amazon links to the hardcover edition of the book. Printed on the back of the book is a price barcode and an ISBN. This is not a sticker put on by the store but it is a printed part of the back cover. The barcode has a barcode number and at the top of the barcode it says ISBN and list this number 0965707202. Run this ISBN at Amazon and see what you get. This is not a joke the ISBN I listed is the one that is on the back of the book. I ran the ISBN at BN.com and is also goes to the same wrong book. Run the search, the book that is retrieved will give you a laugh. Anybody heard of this happening before?