Does this explain things?Each clip costs around $5 at the autohaus dealer ..is that reasonable?
Mercedes clip : Sports Linkup Shop : Mercedes clip see them 10 clips for $4.xx .. ??
I would strongly advise against the metal door panel clip removal tool. After 8 years in the autobody business (I was the interior guy) I swear by the cheap plastic/nylon set that is sold in Harbor Freight and some autoparts stores. There is zero risk that you'll scratch the paint where the panel and door meet. The plastic ones also have some give to them, which helps you "feel" around in there. The clips I purchased from the dealer for my 92 S-Class actually fit worse than similar ones I purchased from NAPA, so I use the NAPA clips exclusively on the 90's S-Class.The clips for the front and rear doors are the same part number....163 988 16 78.
If you bought the proper tool you wouldn't break any and it would be cheaper than buying the clips. There's a tool for everything.