No. You may choose not to prepay by selecting “No thanks” or by waiting for the prepayment window to expire. Delivery of your package will proceed if prepayment is not received. However, once it arrives in the destination country, it will be subject to duties and/or tax collections from your local Customs agency or delivery service provider using their preferred method (collect on delivery, collect at post office, etc.). If you choose to prepay, your package will clear customs with the duties and taxes paid and there will be no additional charges due upon delivery.