I would like to retract what I said earlier-- I understand exactly what you meant, now.
To be fair, I've never been to a good surplus store before today. Yes, I have been to the ones in Oceanside, and just about every single one in all of SoCal. I've been to some up in MA., and knew of several here in the DC metro, and they were all... bad. I mean, occasionally something interesting, but not too often. However, today I went to a shop down in Alexandria, VA, and my head exploded.
All of the stuff I could never find, everything that didn't exist on ebay, and everything that ever made me drool as a kid was there. All of it. It was the Chamber of Grails.
And prices were... reasonable. Really. It was a trip.
So, now I have some jigsaw and lizard, and I'm as happy as a little clam-- but I totally get it, now. There's what can be got, and what cannot.
And, to try to answer the question now... hell, I don't know. I have everything I wanted. I am going to have to wait a week before I even know what to start coveting...