Originally posted by Marcus Rowland I deal in old lenses, the old FD prime lenses are very good sellers - I think a lot go to micro 4/3 and other mirrorless cameras as others have said. Good clean zooms are OK but not wonderful sellers, they don't offer huge advantages over lighter and more affordable alternatives. Anything with the FDn mount is a pain - I don't think I've seen one in good condition in the last couple of years. Fungus, damaged mounts, and other mechanical issues are the main problems.
The 50mm lens which was kitted with a Canon AE-1 Program when my Mother purchased it after her first grandchild was born in 1980 appears to be in good shape.
I seem to have inherited in when she died in March 2018, but since I switched from Pentax to Canon in 1995 specifically to get their auto-focus,
I don't expect to ever use it, and my heirs may be left to deal with it some day,