Just picked up a homelink mirror for a great deal:
Gentex 453 Autodim Homelink Hidden Amber Compass Rearview Mirror CLEARANCE | eBay
It's a B grade and I got it for $30. It's a B grade because there are minor cosmetic scratches on the housing or glass. Opened mine up today and it only has minor scratches on the top side of the housing where I will never see it once installed. It even has the amber compass. I haven't installed and powered it up yet, but they are all supposedly tested.
Beware though, YMMV.