lobour on brake job

check estimator on this page , or call and compare local shops.............HINT.......stay away from chain places , odds are they will sell you every possible part they can. ...With cheap parts and maybe 2 hours labor(adding some time for possible age corrosion related conditions , You may get front rotors , pads and wear sensors replaced for under $350.00.....Again , I stress , thats with cheap parts...BUT - you have an S500-(maybe armored version?) --do you really want to go downhill? I recommend checking dealer and local (if any) MB specialist shop , to keep things in perspective. ENJOY the ride!!