Quick take
Waterdrop currently lists G3-N1CF at $29.99 for up to 6 months, G3-N3CB at $29.99 for up to 12 months, and G3P600-RO at $109.99 for up to 24 months.
The three core G3P600 filters
The first-stage cartridge is G3-N1CF, the carbon-block stage is G3-N3CB, and the dedicated 600 GPD membrane is G3P600-RO / WD-G3P600-N2RO.
Replacement schedule
Waterdrop publishes up to 6 months / 550 gallons for G3-N1CF, 12 months / 1,100 gallons for G3-N3CB and 24 months / 2,200 gallons for the RO membrane.
Current list prices
Current one-time pricing is $29.99 for G3-N1CF, $29.99 for G3-N3CB and $109.99 for the G3P600-RO membrane.
Annualized ownership
Using the manufacturer intervals and current list prices, the core cartridge set annualizes to roughly $145 per year before promotions, optional remineralization and tax.