Have you tried to look in the phone book under auto glass. I know they usually carry windshield glass. It might be worth a shot. If they do carry it, It will probably be cheaper than the dealer. You can try ebay or the local junkyards.
Hey, hope this helps. I was just on a web site called car-parts.com and did a search for you and they have the glass for $250 plus shipping. Also, check out ebay or do a google search. Either way, don't give in to dealer prices! Pablo