How much does this cost to the nearest dollar?

KONDUONE 4-Pack of WF2 Replacement Humidifier Filter for Kaz Vicks Humidifier Filter -Fits for Kaz 3020, Vicks V3100 V3500 V3500N V3600 V3800 V3850 V3900 Honeywell
IDEAL REPLACEMENT - Filter captures minerals and pollutants from water & helps prevent white dust. It has improved filter design that maximizes moisture output. The filter material is reinforced for maximum efficiency and longer filter life. 4 PIECES OF GREAT VALUE - It is a great, affordable option for your home humidification. Increases humidity during dry seasons to create a comfortable home environment. Pack of 4 humidifier replacement filter, regular replaced to prevent excessive drying into your house. HUMIDIFIER MODELS -

Price is $20.00

Price: $19.99