Customers often play multiple quarters per visit, because the challenging game encourages competitions (regular bulk machines can't do that!). 

Both children and adults are attracted to the machine by the exciting game.

More affordable than any other interactive machines and not much more expensive than "standard" venders, so you can buy more machines for the same amount of money. 

Small footprint allows placement in virtually any location.

Increased sales volume means machines will pay for themselves quickly, allowing you to expand your route faster.