Woot has Purewell Gravity 2.25-Gallon 3-Stage Water Filtration System w/ 2 Filters (Silver) on clearance for $79.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Note, product will be sold by Woot and fulfilled by Amazon

Product Details:

• Black carbon filter utilizes a 0.01μm hollow fiber UF membrane, a silver ion membrane, and an activated carbon block designed to reduce chlorine and intercept rust, sediment, organic matter and heavy metals.
• Dimensions: 8.8″ L x 8.8″ W x 20″ H
  • Includes:
    • 2x Chambers
    • 2x Water filters
    • 1x Spigot
    • 1x Stand