Great Alignment for a good price!

Naylor's Alignment charged $112 per wheel bearing for a 1 year warranty part. Naylor's stated the parts were from Carquest. Naylor's manager stated the markup on parts was 25%, while the owner stated the markup was 30%. The labor was approx. $75/bearing. I agreed to the estimate to have work performed based on this understanding. This was my first experience with Naylor's Alignment, therefore I called carquest to confirm the price of the parts. They claimed they carried two wheel bearings for my type of vehicle, one with a 1 year warranty, the other with a lifetime warranty. The one year warranty part was $52 to the public. This made my markup over 100%. The parts were already replaced prior to confirming this information. They led me to believe they were misleading, and hiding markup in their parts to make additional profit. I requested to see the receipt upon discussing this issue, and they refused stating that they had already turned it in. To whom? Maybe their corporate office?