Best Buy via eBay offers the Envion Therapure TPP240 Permanent HEPA-Type Air Purifier
in Black, model no. 90TP240TW01-W, for $99.99
with free shipping
charges the same.) That's the lowest total price we could find by $17. This air purifier uses a combination of filter cleaning and a UV lamp to kill airborne germs. It's designed for rooms up to 212 square feet and features three fan speeds, a 24-hour cleaning timer, change-filter LED, and HEPA filter.