Believe it or not VAG did still do them last time I checked, although this was about 2 years ago!
I was quoted £80 each side.

I went for a cheaper alternative and the vinyl has lasted well but I should think the VAG are properly moulded to the contours of the kit. If I could have afforded it I would have got them.
I've just finished respraying the car again and this time I've left them off for a cleaner look (a white cabrio). It's debateble how effective they actually are. As soon as I get the pictures back I'll post them in my gallery so you can see what it's like without them.