actually I don't really know how to calculate the coin which is undervalued but one thing that I only know is when the price is at the cheap price then I will take a look with the project, learn and read what they have, and after that I can know the coin have a value or not. if I think that the coin has a good value but now is underestimate, then I will buy the coin and save it as for investment. I am sure that in the future, the coin will rise and reach the higher price.