I suspect Lerner's contacts might run a little further than Ashley's book of cronies and people he hasn't f***ed over yet.
All Ashley needs to do is hire an investment banker (barclays, jpm, merrill, etc) or a broker and value would get set, they'd go after specific clients etc who had the cash to do it and they could get it out there.
It honestly is that simple...its up to the fat man to actually agree to a value or reach out to the right banker/broker to get it done.
I think he's waiting around for someone looking to make a hobby out of it to buy it for more than it's worth. Until then he'll just sit on it while it makes a decent profit.