All books on my shelf are in good condition. I wouldn't post anything that I wouldn't want in a swap. Many have been read only by me as I am, unfortunately, the only reader in my home. I don't post library discards and all hardcovers are dressed for dinner wearing jackets in good condition. I do visit the typical donation sites such as the library book sales and Goodwill, but I will only purchase books in excellent condition if I plan on swapping them. Thanks for checking out my bookshelf.