WheelDynamix on Rt. 135 in Natick, MA.
http://wheeldynamix.com/home.php
Ask for Jeff, he's the owner. He did the lower bumper and headlights on my 135i. Very professional, and a very nice job. I need to get my nose within a few inches of the bodywork to see that the covering is even there.
He'll quote you prices on the phone and they will be the actual prices. I really don't remember the exact price, but it was somewhere around $500.
One thing: I also had the outside side mirrors done. Jeff uses Xpel, and it's a very good product but the mirrors were a two-piece application due to the sharp crease in the mirrors. Surprisingly, I picked up some wind whistle from the mirrors afterwards. I'll be having the mirrors uncovered. Not even sure why I did them in the first place...
Tell him Jon w/ the 135 sent you!