Teacher Discussion Forums

I'm going to be traveling to NYC in a few weeks and was thinking of popping in some bookstores to see if I can find some new TEFL books/materials that aren't outrageously priced like they are in Madrid, where I teach.

Does anyone know of any specific TEFL bookstores in NYC? Otherwise, I figured I'd just go to a big Barnes & Noble to see what I can find.

Thanks for your suggestions!