I bought a very slightly used Iiyama 5K monitor (XB2779QQS-S1 with Displayport 1.4) for 450€. While it does have some stuck pixels, they are so tiny that you only notice them when you are looking for them.
1800€ is insane.
I also use a 27" 4K monitor. The difference between the two isn't that great. 5K is mostly useful for 4K video editing.
PS: It sounds as if the author would have had a great experience with a 350€ 4K monitor, too.
Considering the number of people out there making enormous salaries doing jobs on computers, spending 10+ hours a day looking at their screen, 1800€ does not sound insane at all.
Same thing applies to any tool of any trade. I work with surgeons, and you would be amazed how unfathomably expensive all their instruments are.
(Though to be fair I do all my work on a pair of 100€ monitors.)
I agree that spending a lot of money on something you use a lot makes sense. Heck, i'm waiting for my Keyboardio model 100 to ship.
My point was that Apple's monitor is not 4x better than this monitor, so the relative price seems very high and not justified, even by Apple's standards.
I also use a 27" 4K monitor. The difference between the two isn't that great. 5K is mostly useful for 4K video editing. PS: It sounds as if the author would have had a great experience with a 350€ 4K monitor, too.