Pin prices allways fluctuate, but its crazy how SS has appreciated this year. DMDs have come down quite a bit, I may start getting into them again. 
SS is a boring machine to play - but the artwork must be its redeeming feature. Having said that, machines that are completely restored will always return a good price.
SS and EK have been the machines that have returned the $$ over the last year.
Within the next 5 years I predict Playboy to be right up there with KISS as the most expensive early Bally.
