Ebay offers Refurbished Dyson DP01 Pure Cool Link Desk Air Purifier and Fan for $159.99 (reg $399.99) with free shipping.

Product Description:
The Dyson Pure Cool Link Desk Purifier automatically purifies to remove 99.97% of allergens and pollutants as small as 0.3 microns. With a 360 degree glass 1st generation Dyson HEPA filter, it is able to capture ultrafine particles from the air, including pollen, bacteria, and pet dander. A layer of carbon granules captures odors and potentially harmful toxins like paint fumes. Thanks to Dyson Air Multiplier technology, the Dyson Pure Cool Link Desk Purifier offers year-round purification with adjustable airflow for warmer months. The Dyson Pure Cool Link Desk Purifier also offers intelligent purification. It automatically monitors, reacts and purifiers – then reports to your Dyson Link app, where you can remotely control your environment. The night-time auto mode allows the machine to purify on the quietest setting and the LED display dims to avoid disturbance. When it is time to replace the filter – usually after 6 or 12 months, depending on usage – it takes less than 60 seconds.