what happened to the price it dropped $20 in a week??

When Bitcoin stabilizes, market will rebound. Just don't get caught in panic, stay calm is best you can do.
It is pathetic that a coin unique as Zencash is still dependent on bitcoin price, but the best advice to give is to buy all you can at current low price.
True, this time is the best price because soon we will see bitcoin will go back to the moon and that's not for long, let's get ready to welcome.