you have to do this yourself....I just did my 1990 300TE front brakes, which were down to backing plates for $21 out the door from AutoZone....the pistons DID retract and the rotors did NOT require anything...brakes are the biggest bag of profit for a car repair shop that there is...no question.....sort of like Coca-Cola at McDonalds, they LOVE to sell you soda at $1 that costs them 6 cents, pure profit.....