Deals are mostly gone. I've been going to Allentown PinFest/PinWiz show for 11 years. I was just there over last weekend. Hardly a DMD game to be had that wasn't outrageously priced. Very small stock of junker machines in the flea. Years ago there used to be truck after truck that would pull up and disgorge dozens of half decent machines to blow out. Those were the golden years.
I'm not saying prices will explode, but deals are few and far between. I know I won't let my current machines go for low prices. It's too hard to replace them. Everything seems to be settling in in bands of pricing.
Want a decent 80 solid state, expect to pay 900-2K (want a Fathom or Centaur 4K)
Want a decent Sys11, expect to pay 1500-3K
Want a decent DMD, depending on the title 2K-4K+
Want a fun to play Stern of yesteryear, expect to pay more than they were NIB (e.g. 5K for a nice LOTR or 4.5K for a TSPP)
Parts are drying up too, but that's another whole thread.
This hobby always was expensive, it's only getting more so.