My point with providing the example of Madison, WI was not that Madison is supposed to represent the rest of the world/pinball industry as that is surely not the case (Madison is a different breed of city for sure).
My point was that your assurtion is far too great a generalization and obviously the shows you go to are also no more representative of the industry as a whole than Madison is.
What I can say for certain is that at MGC this past year the average age of pinheads was much closer to 30 than it was to 60. I would think MGC provided a reasonable static POV of the pinball collector/player market in the midwest. That cross section was extrememly diverse in age braket and social status, but mainly consisted of males from age 20-40 with expendable income. I would think that these guys with expendable income and the immediate gratification age braket are ready to buy any deal that comes around and they are driving the decrease in supply and increase in demand/price. Most of the 20 and 30-something guys I know are more than ready to buy and have 3, 5, or even 15k that they are ready to drop on a new hobby. That may entail selling a previous hobby, but they are typically ready to spend NOW and scoop deals before I even hear about them being on CL.