Based on what you've ordered, you have a few different delivery plans. If a product is marked 'Free Delivery', it qualifies for free ground shipment. To earn free delivery on order, however, all of the goods must be eligible. Ammunition, gunpowder, batteries, gasoline, chemicals, and handguns are some of the products that cannot be delivered to P.O. Boxes.  The shipping charge may vary due to many reasons. Shipping is generally charged according to the order and the location of the shipment. Check out the Palmetto State Armory's website for more info on how much each type of delivery costs and how long it takes.