This RO water system intrigued me

[soccerdad]

Reasonable reviews, under $100, replacement filters $40, 100 GPD, and a 1:1 waste to water ratio. The $95 price may be expired, but being Amazon I bet they run it again.
http://www.homebrewfinds.com/2019/0...l-in-your-brewing-water-lightning-deal-2.html

 

[IslandLizard]

Find out what replacing the consumables will cost, a new set of filters and at some point the membrane.

 

[soccerdad]

Noted above. Filter set $40