I recently sold a number of pieces (lenses, bellows and bodies ) to the KEH purchasing rep. who attended a photo Buy/Sell/Trade show here in Toronto.
I didn't get a great deal of cash for the pieces in comparison to what I might have realized through ebay or craigslist. But on the other hand, this stuff was all old manual focus film equipment, so who knows how long it would have taken to sell it , if ever, and I avoided packaging, and fooling around with payment etc.
For me, it was stuff I inherited, but didn't need so the money I got on the spot was found money, so I'm happy with it.
Not a solution for everyone, but it worked for me.