TigerDirect offers the refurbished Hisense 55" 120Hz 1080p Widescreen LED-Backlit LCD HD Television, model no. F55T39EWGB, for $699.99. This $100 mail-in rebate drops it to $599.99. With free shipping, that's $50 under last week's mention of a similar refurbished model (which was via pickup but didn't require a rebate) and the least expensive 55" 120Hz 1080p LED-backlit LCD TV we've seen with WiFi. It features a 1920x1080 (1080p) native resolution, 120Hz refresh rate,, 100,000:1 dynamic contrast ratio, 8ms response time, WiFi, four HDMI inputs, and other video inputs. Rebate expires July 23.

A Sohnen warranty applies; however, it is unclear for how long and you must send away for it.