Fortnite fps and monitors?

I wanted to ask how many fps as a professional you should play at least and you notice a difference between 60 and 120 fps and between 120 fps and 144 fps. I would also like to know how many HZ monitors professionals play on.

In my opinion you should have at least 120 FPS because it feels much smoother and can also be played.

Most professionals play on 144hz monitors. 144hz is a very big "upgrade" compared to 60hz.

Ok thanks and how much do 144hz monitors cost on average?

150 euro to 1000 euro I myself have 2 monitors that cost 200 euro.

So both together cost 200 euro?