OKay well I have done my research and have decided to go with the C230 Sport Sedan. I have been to various sites which list the invoice price of the vehicle and even the invoice price of the options. This will be my first new vehicle purchase. Does anyone have any experience of actualy walking into the dealrship with the invoice price printed out from the internet, and how to the salesman react? Do they deny that the prices are corect? Do they acknoledge that you have done your research and give you the best deal possible? Anything will help.