I buy on ebay all the time and personally I think it’s fine. The site is essentially like amazon (for my use) except you actually see a picture of the exact item. I buy a lot of used kids books. On Amazon you can’t see the used books beforehand! And every book I buy is a “buy it now”. I rarely sell on it.

Have you tried to sell on Amazon? Last time I did was about 6 years ago (with my own products, so I had to create items), and it was a horrible experience. I couldn’t believe what a pile of crap it was (compare it with etsy, which is pretty smooth aside from bizarre shipping settings).