To me, pinballs are like pieces of art, that you can interact with! Each machine title is different and unique! In a world of billions of people, there is only a very small supply of, say, AF's or TZ's. Also, with countries like Russia, china , and India, where they becoming economic powers, they want to be and have what America has. It's like when Japan started buying up all american collectables, like guitars, blue jeans,etc. Supply can't possibly keep up with demand!$$$$$$$$ JMO!