We are still working out how to best calculate shipping. Most orders are shipped via USPS; over 20lb are usually shipped via UPS. We will issue a refund within the website if you are overcharged as well as update the settings for future orders. Please call with any questions: 218-666-5233
Also, if the weight of your order totals more than 45lb, please call us to discuss shipping options and to place your order.