A bulk lot like that is never going to sell. $500/bike might be a fair price (probably not), but the odds of finding someone with $37k burning a hole in their pocket who can't think of a better way to spend it than on a poop-stack of non-running minibikes, is very low.
Add in the logistics dramas of having to transport and store said poop-stack of non-running minibikes... It just aint gunna happen.