Wow!!! That is cheap.
We are in So Cal and we had both of ours replaced including a new factory gasket and locking strip. Our deduct. was $250 but considering the glass, gasket, locking strip, shipping and installation was around $2000, that seems like a bargain.
I had the installer replace and re-glue the new gasket fully (to the coach and to the glass) as the original gasket had 7 spots of adhesive to the body and none to the glass...
They did have to re-do the install as their first attempt didn't work correctly and after 3 months or so, both sides started to "slip" and "push" out the lower edges.
After their second attempt (complete removal, cleaning, re-priming and re-gluing), and a few trips, all appears to be well.