As one of its daily deals, Best Buy offers the Winix Freshome PlasmaWave True HEPA Air Cleaner, model no. P300, for $149.99 with free shipping. That's the lowest total price we could find by $19, although we saw it for a buck less a year ago. It features 3-stage filtration, air quality sensor, four fan settings, PlasmaWave technology, and a clean air delivery rate of up to 300 square feet. Deal ends today.