Been 3 years since I sold my bookstore, but I used to buy used books and list them on half.com and 60 % of my sales were to Amazon as I described. Perhaps now you have to list them directly on Amazon.
Thank you for your reply. I thought eBay might’ve brought back Half.com in some form or fashion. It was a great site. I bought several hundred used CDs...mostly old rock & roll...priced from $.75 to $3-4. Shipping was $3, less for the 2nd CD from the same vendor. (I never had a poorly packaged CD...$3 seemed very reasonable considering the sturdy packaging plus postage the vendor paid.) Great selection, CD “condition” rating & “wish list” function, fair notification system, wonderful search engine..problems always resolved quickly (really only had a couple of problems). And then there were the books, DVDs, etc. Once eBay shut it down, I lost interest in combing thru the actual eBay site to look for the vendors that might’ve transferred over.