When you place your order you receive a Pro Forma Invoice. The shipping costs for FedEx are generated by our FedEx estimator that only rates by weight to your zip code. Total estimated cost does not include additional packages or take into account shipping dimensions in excess of 4 ft. (considered oversized by FedEx.), therefore the actual rates charged may vary from the cost shown on your Pro Forma Invoice. If in doubt sbout your shipping costs, please call Customer Service.