How can I pay for my order? You can pay for your order using our 128bit SSL Secured Checkout page. We accept: Visa MasterCard Discover American Express Bitcoin Have more questions? Submit a request 1 Comments Date Votes 0 mark goodall January 07, 2020 18:10 I've been trying to place an order and your web site says "your previous shipping method is not vaild. Please select another shipping method." And it doesn't allow me to do anything. I'm stuck on that screen and cant place my order. Please assist. Mark Goodall Vancouver, WA Please sign in to leave a comment.