Indeed, if the price fall back to the point of 100$ per 1 bitcoin, that would be a good investment. Because the potential of this currency in a current period really unpredictable, but if it goes down even to 300$, I should say it's still improbably really profit investment
don't do it , it's would just hurt you for long time. i have been waiting for long time enough just to see the bitcoin price dropped to $600 or so but now i'm suffering , i have sold the whole bitcoin i have on $800 to $950 and now i'm struggle to set my buy position 
. should i buy right now at $1,200 before the price skyrocketed? or waiting for another flash drop? i really tired and hope you didn't follow my decision .