I dont think bitcoin price increase 10,000 dollars in the year of 2018 because that price is high and for sure they need two years to reach that. Maybe the year of 2019 the price will become 10,000 dollars so its better if you buy bitcoin and hold it for few years to make a lot of profit in the future. I think the possible price of bitcoin in the years of 2018 is 6000 to 8000 dollars because if the price hit 5000 dollarsfor sure many people sell their bitcoin so its hard to pump but for sure it will pump but slowly.