There is a limit to earn money. Before you go through your job make sure you understand everything. There is no confirmation that you will be paid. You will only be paid if the project becomes successful. If you are low rank member then your earning will be low. Most of the cases earning start at member rank position.
What are you talking about? OP is asking about
signature campaign not
bounty campaign. In signature campaign, they payout is already been said by the manager (example: Legendary 50$, Hero 40$ etc). And it's always will be paid, if not the manager will got red trust since he's scamming people.
It's different on Bounties, most of them only scam. Also keep in mind, even the project is successful, that not always they will paid the bounty hunter. They can run with the money and ended as scam project.