Hell, no, you already know that bitcoin is unpredictable, so why are you asking then?
The ones who are saying that have already predicted the price, are lying, they have just said X price and it happened, it doesnt mean that they have privileged information or something like that.
The value of Bitcoin is in roller coaster at some point. But can a bitcoiner be notified if the value of bitcoins will go up or down beforehand?
No one can predict the price, and stop asking this kind of questions in here, because you know the real answer, or have you borned yesterday? I guess that you haven't.