You can actually get your handbrake lever cover in CF by AMG's performance studio, see below link:
http://www.mercedes-amg.com/assets/p...ss_english.pdf
I assume that the prices are based upon taking the vehicle to them which I guess is going to be pretty expensive seeing as you're from the US!! It may be worth contacting them and seeing if there is a way around this. I don't know how this is installed but maybe they could send it as a kit?
Another option might be to print the price list off and take it to your local dealer and see if they can help you out.