Groupon offers the refurbished Hisense 55" 1080p WiFi LED-Backlit LCD HD Smart Television, model no. 55H5C, for $329.99 with free shipping. That's $60 under our April mention of a new one and the lowest price we could find for a refurb by $166. It features a native resolution of 1920x1080 (1080p), LED backlight, WiFi, Smart TV apps (Netflix, Pandora, etc.), and three HDMI inputs.
Note: A 90-day Hisense warranty applies.