Combined shipping discounts may be available when you wait for an invoice and pay for all included items in one single payment. A combined shipping invoice will reflect an actual shipping cost that will hopefully and usually save you money. And yes, if you can't request an invoice (e.g. using the eBay APP which forces you to pay by each item), I will combine shipping and refund the excess postage as long as it is possible to ship the items together and once payment clears.
International sales & shipping via the eBay International Shipping Program.