We get a lot of school maintenance staff come in for tubular keys.
They fit the elevators in the schools.
They usually get 5 at a time, a couple times a school year.
We charge $9.50/key.
Then there are the odd ones cut for trailer locks, bike locks, safes and vending machines.
We have a Scottsman machine which cuts 3 sizes of tubular keys; standard, small and large;

And this machine, which I use most of the time but don't remember off hand who made it.
It cuts only 7 pin center. left & right cuts:
