You've seen schudel5's figures. Only thing I'd add is manufacturers' warranties usually don't cover games being operated.
Allow me to add. Will the location you seek allow one pin ? If an operator has equipment there already, he may not allow it.
Then get your own insurance. Might be a one in a million shot. If someone gets hurt playing your game, kiss everything you own good bye.
Then check into zoning ordinances, and what licenses you'll need.
Do your home work. Best wishes.
LTG : )
Disclaimer : One pin or many games. You are an operator. On call 24/7. This could effect your holidays, vacations, and even dinner with the family.