It takes time for a project to grow since most of the ICOs are startup company so don't be expect after the sale period and exchange listing there will be a skyrocket profit. It needs enough time to introduce to the masses for their working product and it is normal that the value of their asset will be a lot lesser than the actual price during the sale period. There are a lot of potentials of a working crypto projects, who knows in the next 3 years or more and that will be the start of their rising value.