I combine items purchased within a 3 day period, otherwise they are considered separate purchases. You MUST contact me within three (3) days to inform me of your payment method! Please pay for all purchases using one transaction in order to receive shipping discount; otherwise regular shipping charges will apply. If buying several items, PLEASE WAIT for a combined invoice! U.S. shipments are made on Monday through Thursday International Customers: Free shipping offer does not apply - please wait for me to send an invoice with correct amount unless specifically stated.