Here is what I got when I sent them an email.
Thank you for your interest in the Tubi Style products. There is a system available for the E92 M3. We actually have one in stock. The price is $3,440.00. As far as BMW dealerships, we currently don’t have any dealerships signed on with us. If you like we can sell to you direct, and have it shipped either to your door or your installers door. I have attached images of the system for you to review. As mentioned before, this is the first one in the states and we have not yet had an opportunity to install one for sound clips. Please feel free to contact me if you have any further questions.
W i l s o n T a i
TUBI STYLE NORTH AMERICA
3101 Center Port Circle
Pompano Beach, FL 33064