Common marketing methods, if these jewels are sold in regular shopping malls, they are basically true. Some jewels and jade may cost about 300 ~ 2000 yuan, and the price tag is 5000~ 10W. Usually no one buys it, but when the price is low, it looks like no grade, and no one buys it. Merchants will promote through lottery, jewels and jade are not kept, and the prices are all imaginary (often the highest transaction price of similar products is auctioned as a value reference. Platinum, platinum and the like are not preserved, but the processing cost is relatively high, so the price will be artificially high. Generally speaking, merchants will not lose money no matter how they sell it, but the value of jewelry is idealized. Although it is a profiteering industry, whether it is worth it depends on the eyes. After all, even if the material cost is not high, there are additional costs such as designing and processing store rent and artificial water and electricity.