Tenswall via Amazon offers the Tonerone 13.5-oz. Ultrasonic Aromatherapy Essential Oil Diffuser and Cool Mist Humidifier in Natural for $25.99. Coupon code "655C5XBE" drops it to $16.89. With free shipping, that's a buck under our May mention of a similar diffuser and the lowest price we could find by $11. It features a 13.5 oz. capacity, two mist modes, seven LED light colors (with steady and rotating modes), four timer settings, and auto shutoff.