LEVOIT Cool Mist Ultrasonic Humidifier For $19.99 From Woot Prime members receive free shipping on all orders from Woot. This sells for $45.39 from Amazon where it has great 4.5 star ratings from 5,400+ reviews! 2-in-1 Humidifier&diffuser: The Dual 100 acts as both a humidifier and an aroma diffuser, letting you add essential oils directly […]