Yeah, the one thing that really bugs me is how tight fisted a lot of pinball enthusiasts are. Someone can sell them some scans they did of some art and then that very same person won't pass it along for less than $10. The arcade guys are SO much more willing to collaborate and share. I think pinball is awesome, and there are tons of good guys in the hobby, but overall the community is really keen on squeezing one another for an extra penny.
Just recently I sold a NOS mini playfield for a Bride of Pinbot. I sold it for $50 because that's what I paid for it years back. I got no less than five emails telling me that they were hard to find and that I should jack up the price another $50. Some were even calling me stupid and were upset that I was "lowering the value" of an item. To me, that's just bad behavior.