At best, your braking power is greatly reduced; at worst, it could endanger your life by not stopping the car. The average cost of master cylinder repair is usually between $200 and $300, but it can be more, again, depending on the scope of the fix.If individual wheel cylinders need to be replaced, the cost will go up. The repair price for an entire brake job—rotors, calipers, drums, pads, cylinders—can run you $750 or more.Therefore, it's best to stay on top of brake repair and get the pads replaced when you hear squeaking.t this point, what could have been a relatively inexpensive fix is now more expensive. A standard replacement of pads may cost $75 to $100, whereas a drum, rotor, and/or caliper replacement can get up into the several hundreds depending on the extent of the problem. Master Cylinder and Wheel Cylinders.