All shipping costs and shipping promotions quoted on our website (including free shipping) are valid only to the contiguous 48 United States, and these promotions may not apply if your delivery address is located on an island, or in a rural, high density urban, or low-volume freight shipping area. If your delivery location is determined to fall within one of these areas, this website may add an additional shipping surcharge. Please note that it is the freight companies that determine which areas fall within these categories, and they increase their rates accordingly. While Ambient may still subsidize a large portion of the shipping costs, the remainder of the increased charges are the responsibility of the customer. These surcharges are always provided upfront before finalizing your purchase decision (they are not added on after the fact).