Hi Xou, We are sorry to hear that your transport did not go as expected. At Mercury we do our best to give the most accurate quote price possible. While most of the time our quotes are accurate, there are some times when we are not, However we are not usually too far off from the original quoted price. If you have any other questions or concerns I would be happy to discuss this with you further. You can contact me anytime at 954-239-1780 ext. 21