In a long time using cryptocurrency, my experience is the price of the different coins are still depends on the market. Most of the time, this is the one who affects each transaction and responsible for the price. In bitcoin, the cost a long time ago is just a small amount and only one day we didn't expect that the price will rise over 18 thousand dollars. From the data on the previous year 2017 from the cost over a six thousand dollars, the amount of the bitcoin rise over ten thousand dollars in just one month; in prediction, for the next year, the price goes up over five thousand dollars and if it falls just a small amount and not goes down over a range of seven thousand dollars.