Today only, 3-07-12, the Dyson DC25 Ball All-Floors upright vacuum cleaner is $319.99 (list price $499.99) and ships FREE from Amazon.com. This vacuum cleaner uses Root Cyclone technology to separate dirt from the air by centrifugal force, which ensures efficient cleaning with no clogging or loss of suction. It comes with a washable lifetime HEPA filter that traps microscopic allergens such as pollen and bacteria. It also carries a 5-year parts-and-labor warranty