According to my knowledge, the price of a token ICO when the early launching of a lot that cost falls directed the initial price, but it will be back up after a few months or a function of the token can be used publicly, if a platform that you follow have a nice feature and a reliable team, then the price of tokens will also follow the development of the project, some token of the strong survive are usually already have a project before ICO or they were listed on the big exchangers.
Price fall after ico is nkt happening to all of the ico project tokens. There are many out there are going crazy after the crowdsale.
When the price fall again then prepare more fund to buy back again at lower but when price up, we can sell it for profit. Now its depending on our strategy.