When I go onto BMW's website, I can select the SSK as 'installed' for $535!
Link:
http://www.shopbmwusa.com/ProductDet...nterId=3281301
Screenshot:
https://www.dropbox.com/s/gwfrufmdfx...%2018%20PM.png
An installation cost of $115 seems much more reasonable than the $287.50 they quoted me. I wonder if BMW expects the dealer to honor that price? It's certainly worth asking about--anyone have experience doing that?