Hoover via eBay offers the refurbished Hoover WindTunnel 2 Rewind Bagless Upright Vacuum for $39.99 with free shipping. That's $25 under our mention of a new one from last November and the lowest price we've seen for this model in any condition. (It's the best we could find for a refurb today by $30.) It features a 25-foot cord, HEPA filter, dual-cyclonic action, and bottom-release cup.

Note: A 6-month Hoover warranty applies.