Newegg offers the refurbished Hisense 55" 4K 2160p 120Hz LED LCD WiFi HD Television, model no. 55T880UW, for $799.99 plus $89.99 for shipping. That's $884 under the lowest total price we could find for a new one. It features a 3840x2160 resolution (four times that of 1080p TVs), 120Hz refresh rate, edge-lit LED backlight, WiFi, access to Netflix, Pandora, and YouTube, USB, and four HDMI inputs. Note: A 90-day warranty applies, although it's not clear who backs it.

A close price: Quick Ship Electronics via eBay offers a refurb for $899.99 with free shipping.