Walmart offers the Whirlpool EveryDrop Water Filter Kit, model no. DBWL2SM1, for $14. Choose Site-to-Store pickup to dodge the $4.97 shipping fees. That's $12 under the lowest shipped price we could find. It includes an EveryDrop Water Filter, EveryDrop Protective Travel Case, and EveryDrop Micro Contaminant Replacement Filter. It purportedly reduces chlorine and chloramine taste and odor, and filters 60 gallons at the pace of your faucet.