I recently had extensive suspension and brake work done on my Dodge Ram 3500. I received a copy of the final repair order and checked the price of the parts they installed from the NAPA store they used. I was shocked to find that they tripled the cost when they billed me. When I pointed out this fact, Dave, the owner, replied "Don't go there". I asked for a reduction in the bill. He allowed me a 10% reduction. He told me his standard mark-up is 100%.
Otherwise the work was done well, but at considerable expense.