Dyson via eBay offers its refurbished Dyson HP01 Pure Hot + Cool Desk Purifier, Heater, and Fan in Iron/Silver for $169.99 with free shipping. That's $17 under last month's refurb mention and the best deal we've seen. (It's $193 under the lowest price for a new one.) It features a vacuum-sealed glass HEPA filter that removes 99.97% of allergens, 9-hour sleep timer, and magnetic remote control. Note: A 6-month Dyson warranty applies.