Seeing how 4K TV's are becoming way more common no it isn't.
Cheapest 4K tv right now I can find is from Wal-Mart for $179.
https://www.walmart.com/ip/RCA-43-Cl...U4300/55540601
4K TV's are becoming the norm with each passing day, The issue won't be having one it will be having a data plan that doesn't fuck you over. If you are capped even at 1TB of Data you will hit that cap in little over a hour.
Also you can go cheaper then that LG I'm sure, Many stores sell budget new TV's. Yours is also a smart HDR TV so your going to pay more.