Similar to Swinks, about 18 months.  Played them as a kid from about 12 to my early 20's, then moved onto other things.  Then, quite out of the blue, Pete, do you even remotely remember what you paid for this first pin, and what was it?

Sure Shot, Gottlieb Wedgehead EM, $100

local opperator was having a sale, single player games were $100, two player games were $120