I am trying to find a used bookstore online for Thailand. Anyone know of any?

Dasa in Bangkok have the list of their over 17,000 used books on their website, but I believe they do no mail order business.

http://www.dasabookcafe.com

I've purchased online from DASA several times with the books EMSed to my house, no problem.

Mac

Good news for the OP, then. I didn't see it mentioned on Dana's website.

I was in their shop a couple of times, quite a distance from the nearest BTS station, as I remember it, and the BTS fare probably cost more than EMS postage. Next time, I will know better.

You could try this website out. http://www.geckobooks.net/SearchBooks.html

This used bookstore is in Chiang mai and they have about 4 at least outlets pretty much all around Tha pae gate.

DASA everytime. I've been using their EMS postal service for years now. Highly recommended.

Half-price credit given on their books if you return them in exchange for other books.

Good news for the OP, then. I didn't see it mentioned on Dana's website.

I was in their shop a couple of times, quite a distance from the nearest BTS station, as I remember it, and the BTS fare probably cost more than EMS postage. Next time, I will know better.

Yes, that walk from the station is a bit of a bind on a hot day with a couple of dozen books to be returned, so I use mail order now.

Like other posters, I can totally recommend Dasa's EMS mail service; I have used it for several years and never a problem..