My estimate is that no one can predict the price of BitCoin properly because it all depends on market conditions. We will see how the market decides where the price of bitcoin will move until the end of 2018.
That's a fair point. The most significant part of this observation though is "Decentralization". The price cannot be predicted in a decentralized model. Many factors can make an impact in the actual price and end up in the green or the red side. Personally, I have stopped reading speculations about the price and try to make an estimate based on historical data. Maybe this is not correct as the chains keep evolving year by year.