We are currently having issues with Amazon and are in the process of setting up an online store. While we work on adding a shopping cart to our website, we are going to offer free shipping on case orders of Citra-Shield Ready To Use Products. As some of you know, Citra-Shield Ready To Use does not have to be diluted and is ready to clean/ prevent biological growth on exterior surfaces right out of the container. As mentioned above there will be a case minimum order to receive free shipping (lower 48 states only). Each case will contain 4 gallons of ready to use product allowing you to safely treat over 1000/sqft. To purchase please use the contact form or call us at 800-622-1032. Thank you.