Ebay offers Refurbished Dyson HP01 Pure Hot + Cool Desk Purifier for $179.99 (reg $449.99) with free shipping.

Product Description:
The Dyson Pure Hot+Cool™ purifier heater has triple functionality. It purifies all year round, quickly heats the whole room in winter and keeps you cool as a fan in summer. As a purifier, it removes 99.97% of allergens as small as 0.3 microns from your home. Its 360˚, vacuum-sealed glass HEPA filter also helps capture odors and harmful toxins. And whether heating or cooling, Jet Focus Control lets you select personal mode for a powerful stream of focused air, or diffused mode for wide projection. The machine also features a sleep timer mode and an easy-to-clean aperture. Non-connected machine. ¹Tested to Dyson internal method TM-003711 in a 290ft2 room and DTM801.