These rarely go on sale. Woot has the LG 22MD4KA 22″ HD 4K Ultra Fine LED (refurbish)
for $ 269. Regular price is $ 549, refurbs often go for $ 450.
Before anyone says they can get a 27″ 4K for cheaper..
This has the highest pixel density 4096 x 2304 resolution
USB-Charging. This is a full USB-C monitor. No other connection type.
P3 color gamut for professional work.
219 PIXELS per inch vs 163 pixels per inch on a 27″ 4k.
This is a professional monitor. In retina mode, it is 2048×1152