In my experience with repairs to my vehicles, dealerships and repair shops charge 2x-3x the retial price for parts that I can buy at NAPA's retail price. My AC compressor $995 from the dealership, $485 fromn NAPA. I don't buy lifetime warranty parts. They are exactly the same as the 90-day warranty parts, just painted a different color. You're paying about 50% higher price that their lifetime part and they're betting you won't need to replace it. I've never would have been able to collect on a warranty replacement on anything I've ever purchased.