They said that it can go as low as $100 but I think its a good time to buy now.

Few days it was $295 and now less $100 is a good buy but if you think that's still expensive then wait for more dips. But seriously, I think that this can be considered as one of the cheapest rate now for ETH. If ever its about to rise soon, then you're one lucky guy to have it at $180.