I'm also from south eastern PA and my take on the gun shows isn't that different. I've gotten pretty lucky at the last two I went to but one of them was a purchase off a guy walking around with it. In York, I found a No4 MKI in good condition, price $300. Only other one in the show was in rougher shape for $350. There were no other milsurps at the show that interested me. A very beat up MAS 36 for $1100 (I have no idea what's going through that sellers head), the same old dozen very overpriced and beat up Enfields and Arisaka's that I've seen traveling from Lancaster to Harrisburg, and a few Yugo
Mausers. It's been slim pickings. Lancaster's gun show as a complete bust, other than the rack of beat up stuff, nothing except the usual Mosin Nagants just out of the crate. After walking around the entire show, went back to the first No4 MKI and made a deal that both he and I were satisfied with. Harrisburg was a lot better than both but I had one item on my list a Swiss
K31 and while I hadn't seen one since a very overpiced one at Allentown, I found one on a dealers table that was priced OK and the one a fellow was carrying around that I got a great deal on.
The gun shops have dried up, Cabela's has dried up. I'm thinking no one is either turning them in to sell or they are getting bought up as fast as they put them out.