Just sold my e93 M3 and I have the foldable OEM wind deflector available for sale. I can do $280 shipped and paypal'd. It is in great shape; this retails for $525-$545 at dealerships. It makes a HUGE difference when driving as the wind just goes over you and your passengers wont complain about their hair flying everywhere (it also eliminates the noise). PM if you are interested. Thanks!
will post pics later as soon as I can get them hosted.