Replaced the internal floppy on our A500 recently and the Chinon FB-354 that came out can be used for parts or refurb.
FREE to whomever can use it. Just offset the freight for me or you can pickup if you're near Portland, Oregon.
It's a little too heavy for 1st Class rate, so priority will run $5.
Drive was functioning before replacement, however, it is clear that it is has a significant alignment issue since all disks written by this drive were no longer readable by new drive. Basically it was unreliable and frequently hit errors reading commercial disks.
Eject button was also maimed long ago attached permanently with epoxy:
