Quoted from The_Great_Man:My plan is to try to find a Williams High Speed or NGG game for around $2,000-$2,500 and stop with that. Unless of course I find a decent Spiderman machine for sale.
My experience has been that pinball machines are like water: they fill their container until it is full. Fortunately/unfortunately for me, I've never had room for more than 7 pins in my game room. So I'm (somewhat reluctantly) content to keep that as my limit.
I have several friends, however, who have pins scattered across multiple rooms in their homes. To them, the entire house's floorpan is their limit (which includes space in the garage for those who live in temperate climes.) The only reason I don't do that (besides controlling cost and fear of them taking over) is that I'll regularly invite a group of people over to play so I don't want them traipsing all over my house to try all my games.
So far I've been able to stick to my "all pins must live in my one and only game room" rule. But I have been VERY tempted WAY too many times when I see a game I'd really like to own and start thinking things like "Do I really need that dining room set? It rarely gets used ..." and "you know ... if I moved the sofa over there and put one end against the wall and then got rid of the end table I wouldn't need any more ..." In short: I need willpower to not get Firepower.