When you choose Standard Shipping you pay nothing — absolutely Free. As a convenience, we also offer Free 2-Day Shipping as long as you live in a qualifying zip code. We have five strategically positioned fulfillment centers across the United States, but not all are fully stocked with inventory. If the product is not on the shelf in a certain location, we cannot offer free 2-Day Shipping. But keep trying as we will be fully stocked with inventory nationwide during late 2020. Thanks for your patience!