Best place I've found to buy books a reasonable (or better) price: http://www.abebooks.com
Here one can buy copy of Little, Big in pb (very good condition) for $3.75 or a first edition hardback with dust jacket for $600, and 186 choices between.
Or you can buy his "Three Novels" for $16 in Very Fine 6x9" pb or pay as little as $5 in 7x9 pb. (all stated costs do not include shipping)
Very rarely can I not find a book I'm looking for at this site.
-- Crush (who is not employed by abebooks.com, nor has he read anything by Crowley)