NeweggFlash has the Aukey Essential Oil Diffusers from $15.99 shipped.
Aukey BE-A3 Aglaia Electric Aromatherapy Essential Oil Diffuser Cool Mist Humidifier – $15.99
Aukey BE-A4 Aglaia Electric Aromatherapy Essential Oil Diffuser Cool Mist Humidifier (Glass) – $17.99
Aukey BE-A5 Aglaia Aromatherapy Essential Oil Diffuser Cool Mist Aroma Humidifier With Color Changing Lights and Waterless Auto Shut-off Function for Office, Yogo, Spa, Home, Bedroom – $19.99