We sell certified Azeztulite stones directly shipped from the official US site. Our pricing is calculated based on the official US price per gram, multiplied by approximately 1.3 to 1.4 times. This markup mainly includes shipping fees, customs duties, and our meticulous service and risk management. The risks include international shipping losses or errors in the items shipped by the official US site (the error rate is quite high; we've had several orders, and each time there have been some mistakes). Our service includes taking individual photos and videos of each stone, allowing you to feel and choose. The official US site does not provide the option to choose the appearance; they offer weight ranges (e.g., 13g-18g) as options, and you can only choose the range and type of stone. They send them randomly. Therefore, if you buy directly from the official US site, you cannot view photos and videos of the stones and cannot connect or feel them. Moreover, their pricing is based on a range, so whether you receive a 13g or 18g stone, the price is the same. We, on the other hand, calculate the price per gram, so the prices for 13g and 18g stones will be different on our site. We believe this is fairer. You can also skip us and buy directly from the U.S. official. We usually recommend that if you want to buy in large quantities, it will be more cost-effective to buy directly from the U.S. because the more you buy, the cheaper the shipping cost. If you only want to buy a small amount, it is recommended to buy from us. Buy, because if you buy a small amount from the US official, you have to bear the shipping costs, duties and risks. After calculation, it is not far different from buying directly from us. The advantage of buying from us is that you can choose the appearance, view the photos and Video to feel and connect, and all risks are borne by us.