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.
I agree. I don't think it is that simple. Many factors are intertwining in order to identify the market value of an ICO. Also there is no specific average, because every project varies from each other way too much and you cannot just find a single point of comparison for all the ICO's.