I had a problem with the inside rearview mirror on my 1997 E320 and got a replacement from Potomac-German for about half of the cost of a new replacement. ($150) I have no idea what the dealer is intending to do for the amount of money quoted. If your car is similar to the newer models it is a fairly simple process to pop the old mirror off, switch the electrical plugs and pop the new one on the mount. If you do a search on this forum you probably will find a thread on changing mirrors. It might be in one of the manuals or you can get thei information at Star Tekinfo online.

Potomac German URL: http:

Good luck