I ordered some replacement glass for the door mirrors from Sierra Madre Collection. I do not know where they get them from BUT they are not the same thickness as the factory glass. I measured them to be about 1 1/2 mm thinner than the stock glass. When you put them in the plastic housing inside the mirror they flop around with the black trim ring installed. I got some foam tape I had laying around and shimmed the mirror. The plus side about these mirrors is they are double sided. If you scratch one side you can flip it over and use the other side. Both sides are anti-glare.

How much do they charge? I have been using a local glass shop that cuts and installs them for $ 25. Seems high but they fit well.

$26.50 each

I get charged $15 apiece locally, but just cut, not installed.