Ebay offers Samsung BESPOKE Cube Smart Air Purifier for $500 (reg $699.99) with free shipping.

Product Description:
Design meets function with the BESPOKE Cube Air Purification System by Samsung. This visually appealing, virtually silent Air Purification System traps large dust particles, helps remove unpleasant odors, and captures ultrafine dust, providing clean air for your home.
Features

• Covers rooms up to 350-square foot
• Pet mode
• Smart control
• Micro sensor