I fondly remember using two monitors with thin bezels one rotated 90° and the other 270°. I think they could be HP M22f. It makes almost a square. Bezels in the middle can be nuisance, but I usually divide windows or splits in the middle. I guess with as thin bezels as possible it should be still cheaper than the mentioned $1429 square monitor. Now I'm tempted to get them. But there are more pressing matters in terms of my setup though.