In crypto, cheap is a very relative term since basically every coin can be divided into 8 digits:
For example, 1 btc is currently around $11400, but that can be divided into .00000001
One satoshi is less than a cent.

Also, the price of a coin is highly dependent on circulating supply and maximum supply.
So while something may seem expensive, if the circulating and maximum supply is low, than it can actually be considered cheap.


One more thing to consider is how high it is on coinmarketcap.
top 50 coins can be way overvalued even if the price seems low.

So these are all of the reasons why you should run numbers and compare instead of just going off of "cheap" coins.
Just targeting the ones that are like 10 cents or less isn't a wise strategy.