I have bought and sold a lot of trains over the last 20 years as I moved from post-war Lionel > modern traditional (mostly MTH Railking) > semi-scale > scale 3R. As I rightsized my collection about 3 years ago, I sold all the extra stuff before Covid.
When I first started selling stuff, I sold a lot on e-bay and a decent amount here on the For Sale sub forum.
For the average Joe, I think shipping has gotten prohibitively expensive. When I had my last selling binge, 3 years ago, I ended up selling a bunch of stuff on Craigslist and a couple of the local phone Apps. I actually preferred selling this way as I no longer had to pack stuff for shipping and pay shipping costs. The other benefit was that buyers could see the products. These days I think I would still sell locally, if possible, probably adding Facebook Marketplace to the mix.
On the other hand, as a buyer, I'm looking forward to this October's York. It's fun to walk around and try to fill a few small holes in my collection.
Jim
