I have a Drivers side LH, Headlight available from my 05 Audi S4 B6. It is a BI Xenon - complete with ballast bulb etc.
$ 250.00 plus ups shipping with tracking numbers.
Also have the ballast from the LH, Passenger Side Headlight - (the headlight itself is broken and damaged - no good) $ 50.00 for ballast
PM me more more info. I will have pictures up soon.