I just paid $37 shipped for a set of rear pads, + another 12 or so for the sensor (not OEM, will see how it goes) Not going to bother with rotors as they were replaced with the last set of pads. I got about 20,000 miles out of the rear pads. Fronts still have plenty of material left. I wouldn’t measure brake pad life in time.. it’s purely a function of mileage. I’ve had this car for about a year. So I got half your time but I may have driven more.