My two children read this. Creases from turning the pages are visible on the bottom right of most pages. There are no noticeable stains. I used a cover when they first started reading it, but they took the cover off partway through. There are creases on the inside of the cover. This can be shipped with other picture books, but it cannot be included for 100 yen per book. If shipped with other picture books, it can be included with a 200 yen discount.