I combine shipments if you put your items in your cart and make one payment.
Shipping within the United States is never more than $4 no matter how many items you purchase with one payment. Make sure to put the items in your cart and make one payment.
INTERNATIONAL SHIPMENTS are handled differently. I mail the combined shipments to eBay's hub for $4 if you put the items in your cart and make one payment. eBay will put an international shipping label on the shipment and send it to you.