No idea sorry mate, I'm a technical guy so it's hard for me to make long term predictions with out adequate historical data. Having said that, Ether has shown that scarcity isn't the only thing that drives value in a coin - there is a lot to be said for utility. If I was to make a long term call based solely on that, I'd say fair value is somewhere in the $50 - $100 range.

So many variables though!