system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why are 4K computer monitors more than twice the price of same-size 4K smart TVs that can also be computer monitors?
gpt
There isn't an actual difference between a TV panel and a monitor panel.  A 30 inch 4k panel is a 30 inch 4k panel. In reality the main difference between a monitor and a TV is simply a tuner.

 You can think of the monitor as the higher quality product. For the 4k monitors market, panels are largely "IPS" technology which is a more expensive more accurate panel than a common "VA" technology  panel found on budget TVs. Computer monitors are meant to have accurate image reproduction for video and photo editing work, in addition to requiring a higher level of sharpness (especially in text) due to being viewed from several inches away VS several feet. 

A TV with the same internal panel technology will be a comparable price to a monitor. 

Like you are 5: Monitors need higher quality screens because they are viewed more closely than TVs and need to be accurate because they are for work and not play!