Groupon cuts up to 61% off a selection of new and refurbished Dyson vacuum cleaners, fans and accessories, with prices starting from $149.99. (Prices are as marked.) Plus, they all qualify for free shipping. A couple of best bets:
Groupon offers the Ultrasonic Aromatherapy Diffuser / Humidifier for $36.99 with free shipping. That's $43 off list and the lowest total price we could find. It converts filtered water into mist via ultra-quiet high-frequency sound waves and features LED lights. It includes a 10mL bottle of therapeutic eucalyptus essential oil.