If you can make even 100% profit, which is a third of what you claim, all you need to do is pump yourself 10 days in a row, and you will turn 100 dollars into more than $100,000. Why not just do this, be rich, and you never need to waste time again advertising and managing pump groups?
The answer is, it is most likely a scam. Avoid.
How is this a scam? How do we make that much profit? Really simple. You build a community of 500+ members. Have all of them buy a low volume/low market price coin at the same time, then magically the price of the coin goes up a lot. You take your profits and sell at the ATH. It's really easy but you immediately have a pessimistic attitude towards it because you can't do it yourself.