I took the Volvo to Bucky's about two years ago and they wanted $1500 for all the brakes. I had them just replace the front pads but still cost $350.
Found a mechanic up the hill that did all four of my F150 brakes for $350 and just turned the rotors. Took the Volvo for the rear brakes, didn't need to turn the rotors and it cost $150 for pads. Consulted him for my boat trailer brakes an definately said he couldn't turn the rotors as they were rusted out. A buddy helped me last summer and I replaced everything, dual axle, new rotors calipers, lines, and actuator and it cost me a $1000.