Customs Duty is a tariff or tax imposed on goods when transported across international borders. The purpose of Customs Duty is to protect each country's economy, residents, jobs, environment, etc., by controlling the flow of goods, especially restrictive and prohibited goods, into and out of the country.
All buyers are responsible for any duties or taxes that may be due in your country. The shipped fee pay us is solely for shipping. If any international item is returned to sender due to non-payment, we do not refund those items.
Read more about international here - https://www.cbp.gov/travel/international-visitors/kbyg/customs-duty-info