It is difficult to predict in such an unstable market. 12,000 or 13,000 dollars looks too optimistic. This is x3 from the current price. But I really hope that the price will reach at least $ 10,000.
Anything can happen in the market of blockchain just think about the previous price rise of Bitcoin it also happened in BTC that the price doubled in a week. So I think it is possible that the price of Bitcoin will reach more than $13000 in the end of this year as predicted by many experts who are of the view that the price may reach to $20000 again in the end of 2018.