Costco Sale: Pureguardian Ultrasonic Digital Humidifier by Rhonda March 9, 2021 *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. … 0 FacebookTwitterPinterestEmail
