Buying parts at the dealership, unless you're in the trade, is like going
grocery shopping at the airport . . . make that Narita Airport . . .
Dealership economics is complex, and MBUSA's "retail" price reflects enough
margin incentive to encourage the dealerships to maintain a reasonably
stocked parts department. If a dealership is charging over the MSRP for
parts, then that's just being greedy.