If these bots works as they claim, why would they be selling it rather than using it themselves? It would make more sense for them to just run it and keep it a secret right? Also these bots do promise for profits so I'm not too sure yet.
Don't think the trading bot you bought is their best. I am not a bot developer, but I try to think rationally as a developer who wants maximum profit. I developed several bots with different levels, and a special bot with the highest level that I will use myself/not sell. This bot can fight other bots and even sweep the order bots at the lower level at once.