Surely there is a government branch that protects customers from having to pay such an exorbitant price for two parts that could exceed the value of the car and force it to be scrapped, adding to the pile of scrap metal and unrecyclable materials.
I am sure that the US government would love to haul a foreign carmaker over the coals, why not try and get The Donald involved? Add a few extra percentage points to the Mercedes tariffs. Get him to mention this in one of his rants and they will be keen to give us all cheap SKREEMs and keys.