Several air cleaners and humidifiers are discounted by up to 80% off at HolmesProducts.com, JardenStore.com, and Bionaire.com, as listed below. With shipping starting at $7.99, each item is at the lowest total price we could find. Deals end November 12:

Holmes HHG150 Hygrometer for $1.99 + $8 s&h
Holmes HHG50PDQ-U Hygrometer (pictured) for $1.99 + $8 s&h
Halls Waterless [...]