Right, specially test net airdrop will ask to deposit in their platform, it can be 30$-50$ even more i have seen a few airdrops but there are no guarantee you will get any rewards it’s definitely depend on your luck i think. So, it’s pretty difficult to predict that which project will pay reward or not. Personally i tried with several project and get only from only a project.
Just avoid to join airdrops that ask to deposit, it is too risky. 30$-50$ may be not a huge money, but it is better to use for other good things. For airdrops, it should be free, they mustn't ask to deposit with any amount of money. Most of them ask for KYC, you also need to be careful on this matter. It is our personal data that should be a secret information. If you are not sure with the projects, kindly stop thinking to join the airdrops. Only join airdrops from trusted projects, we must be careful because there are too many cases of scams and our personal data can be traded on black market.
True even though it's not big money but it's better to avoid that kind of thing,
as much as possible to minimize the risk and we also have to be wise,
lots of free airdrops and we can take advantage of that.