There is a guy called RoverActive that sells the full ACS kit on eBay for $4999.00. You can save on sales tax going that route. I've never bought from him before though. But read about him all over forums back when I was looking for the clears for a 3 series (E90).

Just wondering if anyone from this forum can share their experience of purchasing from him and the products quality.

Please let us know about much the hartge interiors run (or Hamann if anyone knows).