Dude investing on altcoins basing on its price is not much important. Perhaps you meant low market capitalization coins. Some coins supply are very low so this means higher price. Take a look at Ripple as it is only in cents yet its market capitalization is valued at 6.8 billions in US dollars. Compare it to Litecoin which is 48 US dollars per token yet it only have a market capitalization of 2.5 billions in US dollars. You may take a look at coinmarketcap.com as a reference.