cerecke, where are you located? if you are close by, you are more than welcome to inspect the car yourself.
I am not the first owner. I think the car has several owners in its life. It looks and drives as an 8 year old car would. I have no history whatsoever about this car. You could buy a carfax and check it out if you wish.
I've bought and put almost no mileage on it. I had always wanted a W140 before but honestly, if I had to scale it, my LS430 Lexus would be a better car. I am selling it because I need space for a W215 (CL55). Actually, both the S420 and the LS430 are on-sale now.
You can see why I am selling it in this poll
http://www.benzworld.org/forums/general-mercedes-benz/1315181-your-opinion.html