Every few years at CES, LG comes around with another of its Signature OLEDs. These are meant to encompass the company’s latest display technology and the very best that the TV maker is capable of, and they often come with sky-high prices to match. Back in 2017 we got the ultra-thin “wallpaper” OLED TV. A year later came the rollable OLED TV concept that eventually evolved into a real $100,000 product. LG’s Signature lineup is expensive, to say...