It is true who has a solid deposit on hand, he will not pass by the OPTHERIUM project. Whoever has a small deposit, he, of course, will wait for the release of the project coin to the cryptocurrency exchange.
In most cases, the purchase of assets on the exchange is more profitable than on ICO. But if someone is in a hurry, they can buy at the later stages of ICO, when the minimum investment will be much less.
Why do you think so? During ICO, you can buy coins with a good bonus, especially on early stages.