Good question and I'm interested what the Tesla Service Centers charge. As I understand Tesla mobile does not do that as an option.
I had a non-Tesla EV mobile tech come to my house (Chicagoland) a couple of days ago and they charged $125.
Good thing too as my front brakes were not moving much so were not doing the heavy lifting per normal front and rear percentage of stopping power.
I use standard regen so I guess my regen was hiding any lower braking. This type of thing you would probably only really see a difference in would be true emergency braking needs. My front brakes worked but they were not optimum.
pads I use have a galvanized backing plate to help prevent rust and use a mechanical bonding method for the friction material instead of the traditional steel backing plate with glued on friction material. For rotors I use fully polymer coated rotors to resist rusting.
The rotors are not super special but the pads really help with lasting longer and helping fight rust and corrosion.