411 euros is $482 and its listed as half off of 800 euros or $938 which is you know not suspicious at all.

https://www.trustpilot.com/review/www.computeruniverse.net

Extremely low score of 2.2 out of 5 stars which tons of unanswered shit. Stuff like

Ordered in 2024, missing RAM, ignored for 1.5+ years, now ignoring again

No tracking code, no delivery and no customer support response. Avoid ! Ive lost money ordering an item that just disappeared.

It is probably a broken refurbished unit sold as new with no warranty from manufacturer. Then remember that with monitors there is a certain number of defective pixels that is considered within spec.

As an aside whereas you have no right to a replacement for a small number of dead pixels you have a right to a small return window for any reason but you may lose that return window arguing about dead pixels they aren't required to replace for so start an unconditional return for not being wanted immediately if you get a pos. Although based on history above computeruniverse may just keep your money.