All paperback books are used and graded on a letter/condition scale.
B+/Near Fine - Book is used but looks new
B/Very Good - Book may have some slight spine creases and edgewear, maybe a store stamp inside
C/Good - Book may have some cover creases, edgewear, spine creases and sticker damage. A well-read book.
C/fair - Book may be more worn, could have clipped corners on the cover
Reading Copy - Book is good for reading, no loose pages or broken spines, but a very worn book. Could have tape or library stickers. I don't sell books without covers.