If you're looking for something hard to find I recommend
as a starter point. There are some long-term bookshop people there.
I'm talking in the multi-decade league. They also stock a good number
of good new books. Good bookshop, good cat, good people.
For new books I can't help but recommend BookSense.com
and we have an affiliate program up so that my editorial judgment
can be as impaired.

Book Search Services
These sites search at least two or three (and
often more) of the listings sites below. They are free to use and
are funded by (non-intrusive) advertising. Bookfinder is the mother-of-all
book comparison sites whereas 123pix and Addall boast CD's and many
other products.
Book Listings
These are sites that book shops pay to list
their books. Here you will find many copies of most common books
and usually at least a few of uncommon ones. Some of them are bigger
than others, some of them are better designed but none of them are
charging you 20% to use them (in other words alibris).
5/4/00 Alibris: Hung, Drawn,
Quartered and Damned
