International Shipping - cautions
I live in Canada and routinely import product from the United States. I have learned the hard way to do my homework before jumping in head first.
I'm referring to shippers and their rates. United Parcel Service has a policy of providing a lower shipping charge than the United States Postal Service (USPS). But, before you get the package, for example here in Canada, they charge brokerage fees and any other charges they deem appropriate before you get the package. For example, a vendor in the U.S. shipped me a part that was missing from a purchase at no charge. I was very happy to get the part. When UPS showed up at the door they wanted $24 brokerage fees. The product I purchased cost less than that. It was explained to me that "no charge" was not a valid term. The shipper should have used the term "no commercial value." There were no duties or taxes on the product so this playing with words is totally a UPS phenomenon. Needless to say, I refused the shipment. Subsequently, they tried delivering it several times.
The moral of the story: pick a shipper that most meets your needs. The United States Postal Service may provide a service that appears slower than UPS or FedEx or some of the other high-priced courier companies, but I have more confidence in them than in greed driven organizations. At least I get the product and their costs are predictable.