My bet is 10,000 in 24 months, naturally no one can even try to guess as this world rapidly changes and you never know what tomorrow will bring, so this is an estimate mixed with a little bit of personal hope...
The first time i had a quick look for Ethereum was July 2017 with a price at 237$. I think because of Ethereum has value with their smartcontracts the rise isn't over. But the transaction-fees are a problem. Maybe the EOS System will solve that.