Here is how I combine shipping 3.50 for the first item and 1.00 for each additional item. Please include all item #'s with the payment as well. If you buy 5 or more sets I ship for a flat 5.00 and You must make a combined payment for all items as well. If you win 10 or more items shipping is free. You can edit the shipping yourself or wait until I send you a combined invoice. I send out invoices daily. This is the same for international orders as well.