If your license is still valid you will receive a license-file valid until end of your current license + 1 year. If your license is not valid anymore you will receive a license-file valid for 1 year "as of now".
If you order from outside the EU the 19% tax does not apply. This is adjusted as soon as you enter the delivery-address.
Payment-options are: Prepayment, Cash on delivery (only law-enforcment agencies within the EU) and Paypal.
With PayPal you can pay using various credit-cards even without an own PayPal-account.