TigerDirect offers the refurbished Samsung 51" 600Hz 1080p Plasma HD Television, model no. PN51D530, for $599.99. This $100 mail-in rebate cuts it to $499.99. With $49 for shipping, that's tied with our August mention of a refurb and $81 under the lowest total price we could find for a refurb today. Features include a native resolution of 1920x1080 (1080p), 600Hz refresh rate, two USB ports, two HDMI inputs, and more. Deal ends October 6.

A 90-day warranty applies, although it's unclear who backs it.