The price of Sanya Duty Free Shop is basically the same as that of Hong Kong Duty Free Shop, but it will be lower and lower in the future. However, the tax exemption limit for Hainan's outlying islands is 5000 yuan. If you sell high-end jewelry, jewelry or watches, it is not cost-effective, because many of them are above 5000 yuan. Although some of them are cheaper than those in Chinese mainland, it is not cost-effective to add tax and postage after leaving the island.