Quoted from Chrizg:
People been talking about this nonsense for years and it hasn't happened. Simple supply and demand. More people getting into the 'hobby' than machines available.
It USE TO to be said that the price for a Medieval Madness will only go up for the same reason. It's simple, they said with great authority, supply and demand. Then the unimaginable happened and the market produced more. Suddenly the price dropped overnight.
If this whole remake saga has taught us anything it's that supply can increase and at some point demand will decrease as well.
Don't ever believe that pinball is somehow different than any other collectible market. It's enjoying a resurgence now but this too will change. And maybe quite suddenly.