WRONG PAGE NUMBER?

[bubu]

Amazon says this is over 600 pages, but my copy of the book is only 512. This one is also definitely much shorter than the last 3 books in the series. There was another thread about wrong page numbers, but OP had the opposite problem. His copy had over 600 pages while some online source said it was only 512. Does anyone know if I'm going to have to return this????? Thanks.