It will never happen. Now, we are waiting for Ethereum that will reach 400 dollars and even more. This is the best altcoin and its market capitalization will grow greatly in 2019-2020. It is worth investing in this crypto even now.
Now the price of Ethereum is back to the bottom. And as you said that it is a good time to buy Ethereum. Buyers are now increasingly excited to wait for Ethereum to reach $400-$500. If this is the case, all Ethereum-based coins will also experience a high price hike.