Agree with RedSun re:buyers expecting bargain basement pricing. Just because trad printing is not what it used to be doesn't mean people will sell their gear for a song and dance. If I ever sell my Devere enlargers, you can be sure it'll be for a fair price for a hard to find used enlarger.
Flip side are the people who expect to get several hundred or so for a basic enlarger and a few trays.
Good luck in your search