I just picked up 2 older Dahons - I don't know the vintage, but they have been unused the last 10 years. Model is Dahon V - they are 5 speeds.
Like I said, I don't know why I bought these - good price I guess. They have some surface rust here and there, break binder bolts are rusty. These spent some time on a sailboat. I thought I could take them with me camping, even though a conventional bike on a rack would make more sense.
Maybe I'll leave one at work as I was thinking of using one to go to the YMCA a few blocks away. Maybe they would be a good college campus bike for my son - not sure he would use it, or if there is even room for one in the tiny, tiny dorm room.
I'd be interested in the reasons why people get folders, (except for boats - I get that).