PCMag Shop has the Avanti ZeroWater 4.5 Gal Water Bottle Filtration Kit w/ 2 Filters & Electric TDS Water Tester for a low $79.99 Free Shipping. Tax in NY, NJ, TX, CT. This is originally $110, so you save 27% off.

Unlike conventional gravity-fed water filters, ZeroWater's patented 5-stage ion-exchange filter delivers the only filtered water to measure absolute 000 on the TDS meter. Compare to tap water (75-300), conventionally filtered water (030-500), or bottled water (000-350). This kit also is much more convenient than using a bottled water service or buying, transporting, and handling 5 gallon bottles yourself.