It seems pretty much confirmed we can see Ethereum going under $400 these days.
Qn - Is it a good buy under $400 or wait for even more price drop?
Etherium under $400 is still a good way or move to cryptocurrency world. Price will surely grow back up months from now. And etherium is a trading platform and holds a lot of coins. And more ICOs out there starting. ETH whether how small, you can buy it whenever you want.