I have an almost-12-inch crack running horizontally in the center of my windshield and need a replacement (not repair).

One of the more reputable places (Safelite Auto Glass) quoted me $312 for a replacement while another (linked above - American Patriot Glass) quoted me $200 for a replacement. Both are supposed to be OEM and come to you to fix it. Both companies have a good standing with the BBB.

Any particular reason you can think of as to why there would be such a huge price discrepancy ? I have liability only for insurance so that's out (deductible is too much anyway).