Samsung UN50MU6300 50-inch 2160p 4K Ultra HD TV with HDR for $400, and code NENS4 applies $20 off. Note the coupon has a letter "S", not the number 5.
This TV normally sells for about $480, and has mixed reviews. One reviewer says the TV is excellent for games, but has weak HDR. This makes the $380 deal less attractive since we believe the biggest "wow" factor of 4K comes from HDR. Samsung TVs are rarely discounted, so the brand name may alone make this a hot deal for some people.
For comparison, a TCL 55S405 costs $400, has decent, built-in Roku with 4K, and may be a better value.