This depends on what you want. A setup of original brakes can run $300 up. A kit from Baer or Stainless brakes can run over $1000 per set ( Frt or rear) Depending on what year you have, you will need different brake pedal, vacumn booster, master cyl, dist block, lines & hoses, spindles, calipers, berrings to name a few things.
Cougar Bill