Altcoin prices are currently very cheap so when you talk about altcoin investments at this time it is very profitable but it's better you can buy an altcoin that has good movement and has the potential to be very expensive. for example altcoin XRP, Ethereum, XLM and others.
Being cheap does not mean you should just hop into anything you see. Some altcoins may be good for investment and some may not be good. One thing you just have to understand is to have the knowledge to be able to differentiate between what you should be taking a risk on, and what you should not even be bothering taking any risk on, everything about altcoin is risky, and there is no doubt about it, and it is how you manage the risks most of the time that matters at the end.