Please complete Checkout with in seven days. Please request a invoice for multiple items purchased when you are done shopping. We ship via UPS Ground only, No PO Boxes. We charge a Flat Rate listed in the item description. Our combined shipping discount is per package, domestically, the full flat rate on the biggest item and $3.00 for each Item after. Four items per package max. Full Shipping charges for all international orders contact us for your rate on each item.