You should be able to buy it cheaper. Its bigger brother was available for about 2K Euro if I'm correct.
LG is an OLED panel, so very different monitor. It peaks at 540nits, not <400 as Asus. It calibrates extremely well for SDR.
There is no consumer OLED panel which can do 1000nits.
Check other shops as manufacture's website is typically most expensive.
I would buy 32inch one as it's basically same price.
If it's not what you need/want don't buy it

Don't buy Asus if you want to do HDR as it's totally unsuitable. If you want to work with HDR cheapest is probably to buy LG OLED TV (700nits peak). There are now 42inch models for about 1K euro. Great price.
LG G models now hitting 900nits and cheapest is around 1.5K Euro if I'm correct.
There is nothing decent <1K Euro for HDR. Even pass that it's always somehow compromised.
If you can't afford forget about HDR and stick to accurate SDR
