IMO they were a far more black BS than the C63.
Rare:
Recaro Pole position seats
CF door trims
CF console
Aluminum billet (small) gear selector and paddle shifters
CF front guards
CF rear diffuser concealing a differential oil cooler
CF splitter inlets
Adjustable coil over suspension
1 piece billet alloys
No rear seats
500 world wide (800 C63s)
Interesting point also was that the boot had a load carrying capacity which was noted on a large sticker on the hinges of 50kg max (IIRC)
And one of my favorite things about the CLK which the C never had, frameless doors and NO B pillars.
List at the time was $340kish
The C63 BS substituted some of the CF bits for black plastic, to me it wasn’t as Black as it could have been.