If it looks to good to be true, it is.
Never buy an indicator unless you can get a demo of it.
Always test indicators on a 1-minute chart. If it repaints on the 1-minute, it repaints on all other timeframes.
I have tested thousands of commercial indicators for people over the years, most are crap, and cannot be trusted.
Marketers are sneaky, they only show you what they want you to see...
And if they tell you, "it only repaints on the 1-minute timeframe," run from it. They are lying.