What is an interesting question: Futures are nothing reliable, but if we think about the market-situation: There will be nearly no supply for days and weeks. After about 2 weeks just 20k Coins will exist while the first 3 days not even 1000 ZEC will be out there. Day 1: just about 100 ZEC. I believe it's possible that some really will buy to prices like that or at least really high.
It will be like that. The buyers will be simply investors/team-Members of zcash. Hype the hype. It is so obvious. But reading some replies at btctalk and in some other boards i already see a fanbase who want to get screwed
And some are ofc some miners taking advance of that situation and support the hype