2013 GTS Coupe
As I understand it ( I’ve had two windshields replaced ) no aftermarket windshields are available for our cars so you can only get the OEM one, thus insurance companies have no choice bit to pay for that one. As for “calibration”, there is nothing to calibrate…the rear view mirror is not electronically connected to the windshield ( as far as I know ) and any light sensors in it would be self contained . Rain sensors calibration maybe ? In any event , i never saw a charge in the invoices for calibration of anything when I had the windshields replaced.