Hi Pamela, Amazon really is miraculous, especially when you live in China. I like the fact that it is now linked to quite a few of the second-hand booksellers too.
Another seller I've used a lot for textile books and who has a good "personal" service is Dennis Marquand (
www.rugbooks.com). I don't think he is linked in with Amazon.
www.adall.com and
www.bookfinder.com are good search engine sites for books
All this is great, though I am noticing the downside that all my old favorite bricks and mortar bookshops are closing ... can't have it every way I suppose!