I just have a 42in LG TV that I use as my main work monitor. It was around $220 a few years ago. After working out the kinks with using it (because a TV is not a monitor), it's been pretty good. I also position it further away from me than I would a normal monitor. In part, that is because I would otherwise see some dimming around the edges due to the viewing angle. And also because focusing further away works better (getting old can sometimes be inconvenient).

It is just 60Hz, so you might not want to use it for gaming, though there are higher refresh TVs out there these days. Of course you have to dig through the marketing fluff to see if they are a true 120Hz panel or not.