As you know 28 October was the launch of zcash, in history of crypto, I don't think something like that already happen!
First price was directly open at something like 2btc for 1zec (on bitmex.com) later when poloniex open the market few moment after first guy send their zec to the trade platform and price become insane and increase like 100 500, 3000, 5000btc for 1zec! Few hours after price decrease to 17 btc then move back to 22-32btc, at the same time on kraken price was at 60-80btc for 1zec, ... It was fun to observe this when you think the price can decrease to 0.00xBTC in few time!
How people can spend so much money? For a product who didn't make any proof, except a good promo and anonymity promise.. I mean for the moment we don't know anything, Zcash can be a real good coin with same propriety as Cash money or a big fail. Sometime people are very paranoid about new project and want to check everything, some other time they buy coin without logical explanation, except take a try to become rich. Certainly cause it look like a good opportunity on the quest of an old bitcoin first pump like event.
When dream of big money get involved, people become crazy!
So you have understand it was a pretty big start for Zcash! Let see how this market evolve in next days.