1) Like I said, prices vary around the nation.
2) Friborage's 2008 takes a completely different windshield, apples to oranges, but probably still close.
3) Almost no dealership does their own glass, they just sublet it out to a glass shop anyway and mark it up... so you could have probably got it even cheaper.
4) Used windshields can be dangerous and a lot shops won't install them because they can't verify what contaminants (if any) might be on it and degrade the bonding surface and compromise the structural integrity of the car. Not saying I 100% agree with that, just letting you know. I'd put one in my car (if I didn't get new ones for 10% over cost) even though we won't do it where I work, but I'd damn sure prep the sh!t out of it. If you get one from a junkyard, be prepared for some places to turn down the job.
5) Almost all glass shops will play the price game, tell them you got cheaper quotes somewhere else and ask them to match/beat it.
