No one can predict what ezactly bounty that will be successfull (in price), what we can go to research a project that at least not scam and will pay for all promotors. We don't know how much that token price worth.
So far, i just identify an legit project from easy stuff like check out their website, team (especially ceo profile) and whitepaper.
You are right, we cannot know which project will be successful in the future. Their prices could collapse many times compared to their first peers and I have been the victim of many such campaigns. Keep working hard and I believe that one day we will find the good reward