I noticed that the place I bought my sun visor from has a used window regulator for $250 plus $25 shipping on eBay. I'm not sure how much these run used so I don't know if it's a deal or not. I had a good experience with this company (fast communication, descriptions, and shipping - got it 2 days after I paid - GA to PA).

http://cgi.ebay.com/ebaymotors/VOLVO...=1218814199796

In their description, they said its for a S70 coupe but I think they meant C70.

Just figured I'd pass it along in case anyone is in need. I actually considered just buying it and keeping it in a box incase I ever need it.