I think the price is going to rise relatively fast to 20000 to 30000 within the next weeks (or month). After that a lot of long time hodler will sell their BTC due to the fact that BTC became obsolete (time and transaction fees). It is possible that after a certain price level between 20k and 30k is reached a massive correction will come.
Then ether the price keeps low for a very long time (or forever) or enough investors use the low price to invest and the price will go up again.
So my prediction --> BTC <30k at the end of 2018 but it is going to be exciting