Say I've won two items from the same seller. If the seller had previously agreed on adding a small amount of shipping to the second item to sort of combine shipping with the first item, how is it supposed to be stated on the invoice? Normally the invoice come with the price of the item won, shipping and handling charges and total. Supposed I've received two invoices, both stating the FULL SHIPPING amount, how should I actually pay since the total (combine) shipping cost is supposed to be lesser? TIA!