Articulating VESA compliant arms

Is there a shop in Taipei where you can get stuff like that? I was thinking it would be cool to be able to have my new computer that I haven’t bought yet swing around and away and to and fro and be where I want it to be without having to move the furniture to accommodate this.

I’ve seen pictures on the net but haven’t sourced anything near Taiwan. I would like to go to a shop and see the stuff in action so I can see how it fits my imagination.

In Asiaworld Center (Nanjing and Dunhua) there is a shop right next to the escalators around the 3rd or 5th floor which sells adjustable computer desks and LCD panel swivel arms.