If you can't find a used one, check out www.hondaautomotiveparts.com. $50.46 + S/H for manual window regulator for a 99 2dr Dx. The price shouldn't be all that much different if the car is a year older or newer.

I don't know why you're dealer is trying to screw you over. $102? Seems steep if you ask me. My dealer charged me less then $60 including tax when I bought a power window regulator for my 98 ex. But ya, check out that site. Most of their prices are pretty good if you're looking for oem stuff.