I agree with T-Mar about the price appraisal. Sadly, there is not much of a market for such bicycles, however...

I do not, necessarily, agree that kids won't find such a bicycle interesting. My grandson absolutely loves his vintage bananna seat bicycle, that I found for him a couple of years ago. He actually prefers it to his BMX. I should add that my grandson's case might be unusual, since he sees my interest in vintage bicycles and might be skewed in that direction also.

Anyway, good luck with the Space Rider.