Walmart offers the Hisense (55H6B) 55-inch 1080p 120Hz LED Smart HDTV for $369.99 shipped. That's $178 off the original list price and the lowest we can find for it currently. It's also the lowest price we could find for any Smart 55-inch HDTV.
It has a native resolution of 1920x1080 (1080p), 120Hz refresh rate, LED backlight, WiFi, Smart TV apps like: Netflix, Pandora, etc. It also has 3 HDMI inputs.
We also still have the Samsung 55-inch Smart 4K UHDTV w/ 3 HDMI inputs for $700 shipped (Reg. $900+). Read more of this post