It could be a "project killer" but it can also help the project to be advertised as long as the promo is linited to only some people with a specific time. New projects want to be popular in the market and the fastest way to do that is to offer the potential investors promo if they will be the ones who will invest first in the project. It's kind of a loyalty award or veteran award or something and who knows if the project succeed and become a strong competitor someday, you can share the credit of being one of the few who pioneered it.