These scientific articles are always such a great read, Guest_Jim. Never know what may be the next break-through in computing, silicone doesn't have that much life left in it so here they come - "orientronics"
You might consider getting a used TV for that purpose. I've picked up a 65" Sceptre (low-end brand) for $600 and i run a few windows for crypto trading, it works out pretty well and also pairs as a TV. Don't expect any decent gaming though, i think its capped at about 30 Hz so the image is superchoppy and 4k (even video) doesn't impress either, there is some flickering in the background, but with your budget you could score something of a smaller size and better refresh rate . Amazon here in US has 50" ones for $300 new, guess you could get something similar used in a good condition