They do, SRS, and they have just raised their fees to booksellers in the past year. The bookstore I mentioned which is offering the affiliate program stopped listing with them because of their fee increases. I was disappointed until she told me why as it gave me a quick easy online way to check her inventory before I actually went shopping in her store.

A person can download ABE's software and catalogue their own library, use it to upload it to their site, etc. if one wants to pay their fees. I haven't compared them to ebay's etc., so can't say which I think would be best. Their software is easy to use.