Each purchase is for a MIX ASSORTED - Lot of 20-LBS (POUNDS) of BOOKS. Pick Your Own GENRE / CATEGORY . We carefully sort these by genre to help you get exactly what you are looking for. These are packed in boxes by weight and are at least 20 lbs per box (we nearly always overpack them to give you extra value). These boxes include a mixture of all formats including paperback and hardback books. The number of books per box varies by genre as different genres has different size formats. PLUS shipping is FREE (Via USPS Media Mail)! The books that you receive in this lot will be selected from our large inventory and will not necessarily match the titles pictured in this listing. The books in these sets are considered modern and printed after 1975. If you're looking for a vintage look, check out our lots of Vintage books.. Please look on SAMPLE PICTURES OF PREVIOUS LOTS SOLD. You will not get any duplicates unless more than 10 lots are purchased. Since these are samples you are not guaranteed to get these exact titles but ALL the books will be from the CATEGORY OF YOUR OWN CHOICE. Please note all our auctions support charities that help poor and neglected kids in need. Thank you for your support!