Products, such as the Thousand Miles items you purchase, are subject to shipping regulations when crossing international borders. When importing goods into a different country or customs territory, the local customs authority imposes a charge known as 'Customs Duty'.
If your territory requires Customs Duty, it is your responsibility to settle the payment with the relevant authorities. The specific amount and applicability of Customs Duty depend on the regulations in your country.
Should you be required to pay Customs Duty, the amount is typically calculated based on the value and type of goods being imported.