Buying a coin because it is cheap is not a wise thing to do, the reason being that you might not know what the lowest price could be. It is possible you buy and the price continues to fall. So instead of buying with the price in consideration, buy the value. A coin with value will have good products. A product that is needed by investors and those who would like to use it. Although, you might be fortunate to buy it at low price, which then increases your chances of having more profits.
changing such mindset is very difficult, about the value itself, this will actually be difficult to interpret because if we see it in real terms, most of the coin coins that have been down have no expected value, but people buy it because they think it has potential or only as a place to get temporary profits