Ethereum have in the past reached a high point of $416.17. In June 2017, was the peaking point month with a close of $395.13 on the 13th. September had a trend where it repeated the jumps in price with similar price points as Ethereum had in June. Now it is circulating in at around $295 at the time of writing this post. However, the correlation the past few month have been near the $300 price point on average. I believe since Ethereum isn't too volatile and has some upside potential like Bitcoin then it has the possibility of making another highpoint. Within the next few month, Ethereum can very easily be worth $400 or more dollars again.