I think it is not that simple, i mean the ico price depends on various factors the biggest factor is the total supply of the coin or token, in other words it is technically called as tokenomics that decides the token structure, supply abd price during the ico.
Indeed, the decimal of the token also has a certain effect. Some may also base their price to the service that they offer; like property coin where a single token is worth 50$. Their reason? you are buying a share of the house.