U.S. buyers may request a total from your cart and I will send you an invoice with the correct shipping. Please note that you can only do this from the website. The app does not have this functionality. As an alternative, you can pay the shipping up front and I will refund you the difference when I box everything up.
Unfortunately, I can no longer provide international shipping except to Canada. Even then, Canadian residents will not be able to request a total because ebay's international shipping program does not support it. If you choose to make a purchase of multiple items, I will refund you for the difference in shipping.