The Global Shipping Program already provides your buyer with an invoice for all applicable item, shipping, and import charges. Unfortunately, you can't edit these charges, even to offer a shipping discount. When your buyer pays, just ship the item to the US shipping center specified, and the Global Shipping Program will forward it to the buyer. Your buyer will directly pay you the purchase price of the item, plus any domestic shipping cost you specified in the listing. Please use shopping cart for combined shipping.