The price of Bitcoin might drastically increase until the end of 2018 however we cannot really predict because it is too early. The price increases when the demands of million of people buy Bitcoin and then hold. For me, it is better to buy now because the price is lower and then hold until you have reached the desired income. Experts speculated that the price will rise too soon so let's believe and hope for that. Bitcoin is too big to lose so we can never go wrong to invest our capital.