I had the same thing happen to me when I ordered form Mouser one day. As said before, It was because I shipped with UPS standard shipping (which did not include the costums fee). I called UPS told them that i would not pay because i purchased $50 worth of items and was charged $85 worth of shipping, I just explained that it will be cheaper for me to order the same stuff again using FedEX priority shipping and they would be stuck with a box that they cant use. After a calm 15 min conversation with costumer support, they let me have my package without paying the fee (since it was cheaper for them, as shipping back to mouser would have resulted in another $85 that they would not get back).