I used to work for J.E. Adams, a manufacturer of these type of machines. There are some major reasons why you don't see typical vending businesses operating these. First, because they're meant to be outdoors, they're built from stainless steel (expensive). Second, they need a dedicated power supply, which makes it hard to locate something like this. It's more something that a c-store or carwash offers as a convenience to customers. It's not really something buy to make a profit (usually). C-stores and carwashes don't want people parking their cars with flat tires on their properties, taking up parking spaces that could be used by paying customers. So, they offer machines like this to keep broken down clunkers off their properties.