I bought the parts and did it myself...
I never did document the install like I planned on. I totally forot.
I ordered from phil at partsshop/fastlane. I got ATE pads and Discs.
I think total cost was about $120-$140 max.
If enrique does it, it shouldn't cost too much.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.