Hey man,
I have a custom carbon with alcantara steering wheel for sale.
Photo:
https://www.dropbox.com/s/s7eajvhrbn5adfv/SW1.JPG?dl=0
Included is the alcantara piece that goes around the buttons and the airbag - just like in your photo.
I paid 2.5k for it, and it has less than 100 miles on it (sold the car).
Make me an offer if you are interested.
Best,
Anton