The price of jewelry can't be unified nationwide, because it depends on many factors. If it is a diamond, the price of the same diamond depends on its size, purity and color, and platinum and gold also depend on its gram weight pricing. By the way, Chow Tai Fook and Zhou Dasheng are irrelevant. The two brands are not on the same line at all. I suggest choosing better brands, Chow Tai Fook and Zhou Shengsheng.