Everywhere they put an ATM, the store, bar, or whatever gets a piece. They are privately owned and funded with your own money. They have 10 -20 grand in those things and most guys fund it with home equity loans. Its a bitch to empty and fund because of robbery threats. Gotta do it at different times so there is never a pattern or you will get robbed.
Lets say you have one in a convenience store and you charge $2.50 per transaction. You keep $2 and the store owner gets .50 cents.
If its a hot store, you can do pretty well until the store owner asked for a 5000 dollar loan and he will pay you back by him letting you keep his .50 cent cut until he pays it off. If its a hot spot you are going to loan him the cash.
You have to have a shit load of locations and they are mostly all taken up. The money was made in the early 90's.