It is hard to answer the profit question without knowing more facts. When I bought my last truck I first went a family friend and obtained some prices. Later on in the week I stopped by another dealer who gave me a price far less for the same vehicle. When I called my friend to check it out, he explained the other dealer was selling the new vehicle for less than he paid Ford. He further explained how floor plan financing worked and about incentives and auto manufacturers rewards to large volume dealers. His advice to me was to buy it from the other dealer, and I did. (Today he works for the other dealer.) Since then I generally look for the most successful dealer I can find. Not always, but sometimes success is good evidence of happy customers and an efficient selling machine.
jmf
jmf