Trading bots are not actually helpful at all for good traders because they lack human intelligence and that's a required quality for profitable trading.
Those devs actually claim that their bots are better than human in terms of consistency and emotion-free, bot's cannot have its own intelligence hence it would be up to what are the strategies are coded with. In the past, have seen lots of trading bots were introduced here in this same board but never seen a "bot made millionaire".
In my opinion, bots may be helpful if the market conditions are same forever, but bitcoin market is well-known for its wild volatility so bot cannot produce good results against ever-evolving market condition or bot needs frequent update to match the market dynamics.
we really need more generous people like him giving the secret ingredient that made them money and they might tell us that if we give them some of our money.
You are right, I have seen that some bots are coming up with re-selling rights. It means, after buying a licence, you will become a re-seller. So, every bot user will work for the dev in multi-level-marketing model. So, the actual money is not be from the trading but from re-selling, lol.