Yep I have definitely seen a rise in pin prices. Not just on eBay but on pinball forums also. Honestly, there are a few prices being asked that are well over the top and others that just seem to take the piss. 5.5K for a Space Invaders comes to mind. Fair enough if these over valued pins are getting sold, many are relisted time and time again.

I can't see a problem with that as I own one  . But the problem is I'll never get such a price even if I throw my wife in with the deal 

I have seen this game and the price tag is still on it in the shop and quite frankly, and I know owners will always view their games better than what they are, my game is probably 40-50% better condition. So if you're looking for a nice space invaders pinball mine is for sale for $8000 or best offer 

And no matter how much I like my spacies looks wise and play wise, at that price I'll carry it on my back to your place.