No customs duties are required on our products shipped to the United States. In other countries, customs duties may be charged and are the sole responsibility of the client. PAYMENT IS BY VISA OR MASTERCARD ONLY. A US or Canadian BILLING address must be given. Shipping charges are based on airmail prices to the US. Purchases are processed through CyberCash and Verisign using a secure server. It is an extremely safe system used by millions of people every day to handle financial transactions over the Internet.