Check out these resources, downloadable as pdf files. They can be printed and bound over here for about 350 baht a set (level).
Note: You need to be up to speed on torrent downloads.
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No worries mate. Too date, I've been unable to find the audio (CD) files, which are handy for teachers that don't wax lyrical too-matt. If anyone can find 'em, please post the link. I've heard they're out there somewhere.
Can't access it, they wanted a donation before proceeding farther into the site.