At the same time, different cities have different preferential margins. The more dealers, the greater the competitive pressure and the cheaper the price. In cities with fewer dealers, the monopoly is more serious and the preferential margin is smaller. Many people question that headline cars are the cheapest. In fact, many headlines are written by the media in big cities such as Beijing, Shanghai and Shenzhen. Most of these cities have dozens of dealers and hundreds of 4S stores competing with each other, so the prices are lower. In second-and third-tier cities, there may be dozens of 4S shops of automobile brands, but there is a dealer group behind them, so the price is not negotiable.