I had a a small accident and had to replace the passenger mirror. I got it at "parts dot com" last month:
TE726912ZF SUB MIRROR(R),DOOR 1 $309.63
Just like in post #8 above, it is very easy to replace the entire assembly, you just pull off the plastic cover on the inside of the door & windshield where the mirror is. There are 3 screws that hold it in place and one electrical connector. I shoved a rag down below when unscrewing the mounting bolts just in case one slipped to stop it from falling inside the door.
I had to replace the colored housing as well, mine was Dolphin Gray in color:
TE71691N170 HOUSING R ,DR MIRROR 1 $36.96
I'm pretty sure these prices were much lower than what it would cost from a dealer.
One other note, if you buy from parts dot com the shipping price originally was over $50 but when I was actually billed it came out to $16.34, shipped by FedEx.