How likely is it that someone will offer money for a signature space to an account that has been quite inactive until now?
Very unlikely! Seems more plausible OP made up the whole thing for attention. Doubt many folks would care about his services otherwise and so maybe he stirred up some fake drama on purpose to get noticed. Can't blame someone for wanting a little attention I guess, but I don't think this is the best way to go about it.
Maybe I am just paranoid.
That makes two of us.