Your cat does not want the expensive cat bed. Your cat wants your desk.
Specifically the warm bit. The keyboard, the notes you are working from, the exact rectangle of paper you need. Not because they are difficult, but because you are there and they want to be where you are.
DeskNest gives them somewhere better, six inches away. A padded round bed that clamps onto the edge of your desk and hangs just below it, so they are beside you at the same height, and your keyboard is free.
Why they take to it
It is right next to you. That is the whole reason they were on the desk in the first place. A cat bed across the room does not solve anything.
It hangs, so it sways slightly. Cats like a suspended perch — it is why they pick the top of the sofa back over the seat.
It is off the floor. Height is comfort. They can see the room and the door from it.
It folds flat. Unclamp it and put it away when you need the desk for something else.
Straight talk
The clamp needs a desk edge with a genuine overhang and a solid top. It will not grip a floating shelf, a glass edge or a thin worktop with a rounded lip.
Cats decide about furniture on their own schedule. Put a familiar blanket in it for the first week rather than hovering hopefully.
Check the clamp is tight before the first use and once in a while afterwards.
Specifications
Padded round hammock bed with clamp mount
Fits desks with a flat top and a clear edge
Folds flat for storage
Removable soft lining