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ETH is likely to hit $250 if there's a significant bull run for next year. It's not the ending price due to bull run but it will be the indicator that its about to be there. We will also about to face a hard fork which will improve ETH.
And every time when there's an upgrade(fork) like what will happen to ETH. There's always a rapid movement on a positive chart so ETH might be going there after the fork but we don't know if the whole year will be great for us.
I think at the end of the last day of this year, the price of Ethereum will reach $250 and more if the excellent situation of this market still happens. And the hard fork of ETH will have a big impact on the future of this crypto. I think like the BCH, ETH will split to more cryptos, and we don't predict the price of ETH when hard fork completed.