The book pages seem to be barely used. Some highlighting and minimal writing, which I am happy about. However, the book is really big and heavy and the seam is completely separated from the book. The only thing holding the book in place is the front and last pages of the book, so basically it is literally about to fall apart. I understand the chance taken when buying a used book but damn, for this specific product, it should be specified that the book is basically about to fall apart.