No one wants them, that much I can say for sure. I never said I never heard of anyone who had one or passed one up, or of lots of them that sold for $25 dead at auction. I just said I never heard of one that actually worked all the way, and no one seems all that interested in fixing them.
They SEEM to be common, although that might be an illusion created by the same 50 or 100 white elephant thief cabinets transferring from owner to owner to owner.