[Epiplatys]

I just replaced my front and rear brakes: pads, sensors, rotors. It ended up being USD$2,960. I also learnt that I did not need to replace rotors just yet (it would have been about $1.3k in savings but I did it anyway, figured I'd do it since I bought the rotors why not). Measure the rotor thickness and it it is within specs replace pads only, which is what BMW TIS instructions say. My rotors were still about 70% left, so realistically it should have stayed for another 40-50k.
I normally track my vehicle expenses in a spreadsheet, so I will see how much the maintenance ends up being. But so far in my previous experience with a few generation of both Mercedes S and BMW 7 series it was never as high as the extended warranty costs (in the long run/averaged, short spikes can always happen).