Walmart offers the refurbished Vizio Razor 60" 120Hz 1080p WiFi LED-Backlit LCD HD Television, model no. E601I-A3, for $549.99 with free shipping. That's the lowest total price we've seen and a current best for a refurb by $150. Features include a native resolution of 1920x1080 (1080p), 120Hz refresh rate, LED backlight, WiFi, VIZIO Internet Apps (including Netflix and Hulu Plus), USB, and four HDMI inputs.
Note: A 90-day warranty applies, but it's unclear who backs it.