> I use my keyboard everyday but I wouldn't pay $20 per month for it. In fact, I paid around $4 total for it, as paying more would bring significantly more diminishing returns.
I wouldn't pay $20 per month for a keyboard either, but I doubt that a $4 keyboard is even close to diminishing returns unless you got a really good deal. Even $100 for a decent mechanical keyboard is not much if you use it for many years.