The big problem with brake service is you really don't know what your paying for.
Volvo cars have issues with noisy brakes. Original equipment Volvo brake pads and rotors are the best parts to get to insure you are getting the most for your money.
Auto parts suppliers now furnish as many as 6 different quality grades of brake parts to mechanics. So I can buy the good brakes, the horrible brakes and four graduated choices in between.
The potential for bait and switch sales tactics are rampant in the car repair industry.
You are paying for the "good brakes" but in order to increase profit the mechanic buys the horrible brakes.
I can actually buy the horrible front brake pads and two rotors for this car for 71 dollars total. You have no way of knowing what is actually going on your car.
If you want to save money go to the Volvo dealer and pick up the parts yourself, then find an independent mechanic to install them. This way you will be assured of quality parts without paying dealer inflated labor rates.