As it states on the home page, free shipping offer of $75 orders does not apply to cases of tiles/clay or gallon size containers. However we have set up discounted rates that will save you more than 50% off published shipping rates. When you get to the shipping page of the checkout you will see the available discounted shipping choice. Any other items in your order/cart will be shipped freight free if total order including the slip are over $75. Only the tile/clay/gallons are weighed so you are not charged shipping on the other items if order total is over $75. If you have any questions, please email or call us.