For what it's worth, I normally look for trains under the usual trains, hobbies vintage etc categories trying to be specific as possible. Yesterday I dropped that search technique and looked under vintage toys, which is about a general category as I could come up with.
Using this I found a Marx KCS A and B unit with caboose in very good condition for 45.00. I don't know if this was a fluke, or the result of the folks not being familiar with Marx etc. I thought I would pass this search and result along in the event someone might use this . Has anyone else found equipment on Ebay under a unexpected category?