Well now prices are around $300 which is kind of low as the Ethereum has reached $1200 so now might be a good chance to buy Ethereum in cheap prices and just hold them, patience as it is great for long term investment and if you are looking for long term than etheruem is good option.
yes, this is a good time to buy ethereum because the current price down in the market, if stored for a while can make a profit, because I believe that in the next few months the price of all coins will return to green, I also agree if ethereum very good for long-term investment