I just purchased one of these through Amazon for only a few bucks more. It is virtually the same set as the UN50KU6300DFXZA, except this one is sold at Sam’s, Price Club, etc. It is a stellar set at a very fair price. They all need to have the power saving feature disarmed to keep the set from involuntarily dimming in low light settings, but otherwise, it is a feature-rich set at a great buy!
I have the 40" version of this TV and it is phenomenal for this price point!