Selling used cameras is very tough here (maybe everywhere) at the moment.
The good thing is that prices are going down and I have upgraded both my Panasonic LX100 to the Mark ii version and my Panasonic G80 to an almost new and mint Panasonic G90!
The problem is that I now have to try to sell my old LX100 and G80 :-)
I have been shocked at how high the prices are in the U.S. for old film cameras and for new digital. Good luck selling yours.