Costco Sale: Pureguardian Ultrasonic Digital Humidifier

*UPDATE* 12/23/14. Costco has the Pureguardian 120-Hour Ultrasonic Digital Humidifier on sale for $69.99 (after manufacturer’s instant rebate), now through January 4, 2015. That is $20 off Costco’s regular price of $89.99. Features:• Warm or cool mist• Mold and Mildew Resistant Tank – Silver Clean Protection fights the growth of mold and mildew on the surface of the water tank• Ultrasonic technology makes humidifier run quietly• Low water indicator illuminates…