Is there any chance that Ethereum will cost as much as Bitcoin in 2018?
Ethereum will be able to achieve bitcoin value, but for 2018 it will be difficult for ethereum to achieve bitcoin value. I think by the year 2019 ethereum will be able to achieve bitcoin value.
It will be possible that ethereum can achieve the value of bitcoin like it will also reach to almost $20000 but still cannot beat bitcoin. Because by that time bitcoin's price will be much more higher that $20000 most probably. I am a strong believer of both coins though.