I've submitted parts requests and had it take a couple of days to get a response, but the response was always right on the nose, and they even answered some other questions I had in general about if the parts would fix what I thought they would.
I will be ordering new pads and discs for my car sometime next week from the partsshop.
Price whatever it is you are buying at the dealer then price it at partsshop. I'm sure you will be ordering from partsshop once you see the excellent prices.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.