Wow, $400 euros? Wasn't the top line "media" version for the iphone 4S $299 retail? and this doesn't support everything that one does?
they are crazy on the pricing, BUT watch the used market on ebay, I picked up my 4S media adapter for $120 shipped, works perfect (guy just upgraded to an iphone 5 and didn't need it). I am thinking I will just hang onto my iphone 4S until the iphone 6 comes out in 2014, oh but that means there won't be a BMW adapter until spring 2015