I have a tech at my BMW dealership I work at in Reno who has a 2003 S3 4/6is (yes with the supercharger). it has about 140,000 miles, It is silver over black leather, competently rebuilt engine and supercharger (he was doing the timing guides and just figured why not do everything), Brand new transmission from BMW, front end refresh, and a bunch of other parts. He is one of our best techs and the car runs perfectly. It was actually Steve Dinan's old X5 as well. I am considering buying it, what would you guys think a fair asking price would be for it?