Not really for the F30 but I just saw a complete set for the F10 on a Swiss site:
http://www.kufatec.de/shop/product_i...W-F-serie.html
It might give you a bit of an idea what you're looking at. The cost for this thing on the F10 is 699 euro, which is almost 900 USD, I can imagine it will be about the same for the F30 (the cost for the rearview cam from factory is only 400 USD).