Almost all Altcoin prices fall by more than half of their ATH price
I think it's good to buy Altcoin at current prices but, even though the current Altcoins price is cheap I suggest you do some research before buying coins because there are many Shitcoins in the markets.
My favorite coin of the month is ACT, Why? rapid progress is the reason I chose it, you can see several achievements of Achain project on their official Twitter or Medium