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.
It depends, since there are a lot of platform that almost identical to each other, some of it tend to lose its value on market because there is someone out there that is a lot more reliable and safe to invest your money.