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?
Don't buy yet price still going down maybe it will drop around $300 this week and that will be the final dip and after that bull run will start, my money is ready to buy more ETH, waiting for it to go down more, wait for few days and you will see, look at the market going down to $300 now