I'm from the USA and recently bought the Flexispot EF1L, which I assume uses the same or similar frame, for around $200:

https://www.amazon.com/Flexispot-Computer-Electric-Controller-Adjustable/dp/B08THFZ7TQ/

I've got two 34'' ultrawide monitors on a freestanding pole mount on the main part and a 43'' 30LB monitor clamped to the back right with a gas spring arm. No issues so far and have been very happy with what I paid. It is smooth going up and down and not shaky. My PC tower sits on the floor on wheels rather than on the desk or mounted underneath it.

​

As far as cable management accessories if you get one of the ones that mounts to a support bar under the desk be aware that this model of mount needs a guard for a pole that connects to the other leg to raise it up and down. So I had to get the kind of trays that clamp to the back of the desk. For how I positioned stuff on my desk and with how much I wanted to move my PC tower when the desk is raised all the way up I needed most of my cables to be 10-15ft long. I didn't need extra power cables since I have a surge protector in the cable tray, but anything connecting to the tower had to be longer.

​

After using this model for a while I want a bigger desk because i want a longer L to rest my arm on and one that supports more weight so I don't have to worry so much about what I put on my desk or mount on the underside.

If you're not using a bunch of heavy monitors or having a bunch of stuff on or mounted under the desk then this frame should be more than good enough.