Song value is based on expected streams looking at previous data, such as streaming history and social following. The artist makes this estimate when creating a fan campaign, but the streams needed to reach the goal is shown on the fan campaign presentation for you to evaluate. Corite also shares other data such as social following and a comparison to other songs out there. Naturally a low goal is easier to reach and a large social following can translate into more listening. But remember, we can never guarantee how many streams a song will get. Investing in a work of art always comes with a risk and you are responsible for making the decision.