My 2017 X4M40i recently had to have front only rotors and pads. BMW replaced them at a cost of over 2k. The new pads create enough dust on the wheel rims that it becomes very noticeable, constantly needing wiped off. The car has 39k miles. The braking is superb, no complaints, and I realize some M brake parts are used in this model.

My previous 328i needed front pads only at 82k mi. at a much lower cost.
So I am wondering if the brake wear of my X4 is normal, and WTF is up with the costs?