For some item,the seller will rise the item price after we confirmed the price to you,so that you need to pay the item difference .

For the international shipping difference,sometimes,due to your item are packed into several boxes,and the system calculated the wrong shipping fee or you change the shipping method by yourself and the system update the wrong shipping fee,our logistic team will send the message to you for paying the shipping difference. 

In this case , we need manualy charge , so need you let us know after you top up so that we can process the order ASAP .