There are one or two that haven't been used.  All others have some percentage used.  Most are 50% or less used. There are also a few ripped pages and loose pages in a couple books.  Some also have price stickers on them.

List of titles

Dot to Dot

Night before Christmas

City and Country Friends

Barnyard

Animal Friends

Very Easy Paint with Water

Color Us

Playtime Busy Book

Fun to Learn

Dots for Tots

Fun and Games