Shipping estimates are sometimes based upon the dollar amount of the item, not the weight of the product and distance it has to go. If requested to pay additional shipping, please enter the dollar amount requested in the quantity box and check out. For example, if your additional freight is $23, enter 23 in the quantity selection box, and proceed to check out. Please also enter your Internet Order Number in the comments box at checkout for reference. Feel free to give us a call with any questions.