Amazon offers Prime members the
Emson Star Wars Darth Vader Ultrasonic Cool Mist Humidifier, model no. 9757, for
$21.54 with
free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $10.08.) That's $21 under our February mention and the lowest total price we've seen. (It's also the best in-stock price we could find now by $21.) It features a 2-liter water tank, 12-hour runtime, 10 moisture settings, auto-off function, and anti-microbial technology.