Honeywell 50250 99.97% Pure HEPA Round Air Purifier for $147.99. shipping is $8.04 for a total of $156.03 shipped. Here is a screenshot for your reference. Alternatively, it is available at Buy.com for $158.09 shipped. This is a electric air purifier for large rooms. It removes 99.97% of particles passing through it and has a Lifetime True HEPA filter vacuums clean with 360-degree air instake. Most places have it about $199.