Hey guys. Remember, in crypto sphere we cant trust anyone! ICO rating sites are lying to us, you have to do YOUR OWN RESEARCH always! Remember this, and dont let yourself be scammed!
Yes, many ICO rating sites are simply paid for their evaluation of the projects. There might be some pricelists like "$2,000 for grade 3 and $5,000 for grade 5" and so on.
I use ICO rating sites only as a guide to get quick data about the projects I want to analyze (like the base price of the token, the availability of bounty campaign and some brief info on the project team).
The same can be said about the aggregators of bounty campaigns - I generally distrust their ratings and try to make my own opinion on this or that campaign.