Let's take a look , this thread was made by 2015 (and It was 1 year ago) .  So , it's nearly impossible for Bitcoin dump to $100/BTC .
Seems the price going to be wild right now , and you can buy bitcoin now (for hope the price still rising) or earn from the free way instead and hold it.

Unless there are big news happen from Bitcoin (like Bitfinex hacked a while ago) , it's hard to reach it.