COMPETITIVE POSTAGE, FREE REGULAR POSTAGE FOR SELECTED PRODUCTS . Regular and Express Postage Availabler. Top Brands: Pentair, ITM, Magnum, AquaPro, KX Matrikx, Doulton, UltraCeram, John Guest, WaterNymph & more... Choose from over 200 different water filters, water systems, reverse osmosis alkalisers and more.