Advice for windshield replacement

[ps2cho]

Hey guys,

Had a large rock hit the 300TE earlier today and its got a huge chip and about 2inch spiders web from the center.

I don't think its repairable, so what are my options for replacement?

I called the dealer and they quoted me $625 for replacement with OE Glass (who knows which brand though).
Does that sound reasonable?

Should I just hand it off to them, or should I buy the Genuine OE glass myself ($~$300), remove the wiper assembly then have a local guy do the straight replacement

Never dealt with windshields before, so I am pretty clueless so looking for some advice from those with some experience in this department on which route I should take.
Thanks!