Best Sites for Finding Collectible Books

[jhanic]

I use AddALL, which can include all the sites such as ABE, Biblio, Amazon, etc. in one big search. The only drawback is that if a seller lists an item on more than one site, it shows up multiple times.

http://used.addall.com/

John

[bookworm 1]

Out of print books only or both.

[coderedx]

Also, not just in the horror genre. I also collect Orson Scott Card, for example. So throw out the best sites for both.

[coderedx]

What are the best websites for finding collectible books? I use eBay, Amazon, AbeBooks, Toms Folio, and a few other random ones. Any big ones I'm missing?