IIRC it was abebooks.com
PvR

"Malcolm" schreef in
www.abebooks.com has a roundup of a lot of secondhand bookstores around
the world. I can find a lot of things there that are not available
anywhere else.

That site should carry a health warning because it is *sooooo* tempting!

"Using this site can seriously damage your wallet!"

***
On the other hand they also carry books that are still in print, charging up
to five times what they cost new.
PvR