Select American Express cardholders can get a one-time $25 statement credit on purchases $250 or more (sign up under AmEx offers on your card's online account).
You can get a $15 savings code when you buy $150 in Best Buy e-gift cards.
The pictured Samsung UN50MU6070FXZA 50" 4K Ultra HD HDR Pro Smart LED HDTV is on sale for $400 with free shipping. This is the same price it will be on Thanksgiving night. According to Rtings.com, this is the Best Buy exclusive equivalent of the MU6300/MU6290 and does have HDR.