Update: Deal over.

PureGuardian 4.5L Output per Day Ultrasonic Cool Mist Humidifier – Link

Amazon has this on sale for today only at just $24.74.
This was selling for $35 and is now its lowest ever.

• A .5 gallon tank provides up to 30-hours of run time and is great for small sized rooms
• Silver Clean Protection fights the growth of mold and mildew on the surface of the water tank
• Ultrasonic Technology quietly disperses a fine mist providing relief from the dry air
• Optimize comfort with soothing low and high cool mist settings
• Slender desktop design features an optional night light