Check ebay once in a while. They seem to pop up now and then and you might even get them at a good price. I don't know if you're on the predental.com email list or not, but lots of members there have already taken the DAT and you might be able to pick up a set there.
good luck!
I recently sold my books---but I have several people that are willing to sell theirs. If you want to price shop----post another message and I'll give you my email.
