I've got one less than a year old honda harmony II with the swivel front casters in perfect condition, and another harmony 216 thats about 1.5 years old. They all run great. How much do you think I could get for them? These are the ones I started out with, and I know no-one on here would want them, although they stripe perfectly. They are belt driven. But where could I sell these at? eBay? or I guess a garage sale? I guess I could get 200 bucks for both, maybe 300 if I got lucky? Thoughts?