I had a list somewhere of everything made. I have the entire Postwar Celebration Series and Conventional Classics.
I had no problems, everything ran exceptionally smooth, except for the M&STL Alcos from the Orbitor set. They ran like a coffee grinder. Got some postwar parts with the bearing from Chuck Sartor, and that fixed the issue.
The auction site has inflated prices, but occasionally you will find a great deal.