It's too late in my opinion. It has already been changed over 30% within the week if I'm correct and having an entry is way more risky as at any point it may get dumped. BTC on rise too and if BTC falls, alts will follow too. I think we should wait more for an entry to ETH.
It will never be too late. We dont know if the bottom price would be on the level of $400. Were not sure if the hike could be faster than expected. The entry price is important but if you do have confidence and knowledge that it could be around 700 to 800 at a later time. Still you can earn profit without buying at a very cheap price. I think this is simple logic.