Get a price from the dealers, they can be very reasonable on trim parts. I wish more people would get a price from MB first. That would help to stop the insane prices for second hand parts on ebay. I am always amased how much many folk fork out for grubby used parts that are actually cheaper new from MB.
That's not a dig at you by the way
Oh and that goes for service items and such from the likes of ECP GSF. I have found many parts cheaper from my local dealer after discount, than the likes of ECP. Always ask for a discount from the dealers, say you are a member of here and they always oblige, in my experience.