I recently started using https://www.betterworldbooks.com I have found it to be very good. I can buy cheap used books (mainly they have been used library books - in good shape).

For every book sold on Better World Books, they donate a book to someone in need. They have donated tens of millions of books so far.

I can often buy the books for under $5 (they [often/always?] offer discounts for 5+ books) with free shipping. They have a very large selection of #books

#charity #used_books #betterworldbooks