Corr-Ze™ 100 and 200 are eligible for FREE SHIPPING in the US with an order of 10+ pallets. Corr-Ze™ 100 and 200 minimum order is 1 pallet (160 gals = 32 qty 5 gal pails). A pallet can include Corr-Ze™ 100 and 200 to hit the minimum. 15% will be added to orders that do not hit the minimum.