Many customers don't know whether they have made the best purchase of lights even after negotiations in the lights store, since they don’t know the real price. It’s said that most led high bay manufactures seldom have direct-sale store, their lights are sold by dealers. Price too high is not good for the brand, however distributers have the right to set price. Some sellers reveal that lighting enterprises are not strong enough to unite the prices among dealers. Actually not all LED Lights with high price are of big revenue. The light itself is a stylish product, and the fashion changes quickly. Manufacturers are not sure whether the product they just developed will be a big sell, therefore they normally don’t produce too many. And dealers often don’t order in large amounts in case of overstock.