~$30 is basically ZEC’s all-time low, which is why I even mention it. We only saw sub $30 for a handful of days in Feb '17, and I originally called for $30 ZEC on Nov 14th '16:
There would need to be a complete bloodbath in cryptocurrency markets for ZEC to see $30 again. This would probably be accompanied by the total destruction of mining profits and the collapse of 99% of altcoins, which is certainly not impossible. If this were to occur, ZEC would not be immune and $30 is a natural target.