I have only seen Vizio touting home theater screens that are without tuners. Way to import for cheaper. Lot of them get returned and I got a 65 inch from Sams club that way. Have a external tuner and got a deal on a 1Tb Xbox for $200 to play disks. Don't bother with trying to upscale copied and compressed dvds to 4k. Get very poor resolution that the Xbox if it even let you view won't upscale very well. Bluray or better for the most part. The smaller LG 43 inch set is in the kitchen-office and has been very good set and was a no brainer when it went on sale for $280 including 3 year warranty to the door. Still can't get its 1080 version for that yet.
A family member thought he got a good deal on a Vizio "TV" from Sams Club a year or so back.
A year later Spectrum cable took over for Time Warner, and the rates went way up. He and his wife decided they wanted to ditch cable.
Went out and bought an antenna. He called me to ask how he could hook an antenna up to the TV.
I looked at the model and learned it had no TV Tuner, basically just a monitor.
I have no idea why Sam's would sell something like this to consumers. People have no idea what they are buying.