Button pads - where can I get from?

[omar]

I can't remember where I've seen it...
But you can get a large pad with big buttons.
Each button, you can assign actions to do whatever you want.

I'm not sure...
I think they use for video editing
When I searched Google, I found in this category

They're super expensive
All I need is a pad with 9 or 16 big buttons

I'm hoping to then assign AHK scripts to each button

On amazon, these cost $150 for example

I'm sure what I want could have a cost of just $2 from China (wishful thinking)

I guess I could buy a number pad and do what I want? But then not sure how to separate the number buttons so ONLY the number pad presses got invoked and not the rest of the keyboard. (Hope that makes sense!)