Free vs paid trading bots

What free usually costs

The most common free EA is a martingale or grid system, because those produce impressive short-run results and are simple to write. They work until the sequence the account cannot fund arrives, and there is nobody to ask about it when it does.

The second problem is maintenance. Brokers change symbol names, stop levels and execution behaviour, and a system nobody maintains eventually stops working on a new account for reasons that look like bugs.

What paid does not guarantee

Paying does not buy evidence. Plenty of paid systems ship an overfitted backtest as a track record, and a price tag is not a substitute for an out-of-sample result.

The questions that actually separate them: what is the maximum drawdown, over what period, how many trades, and was any of the data held back. A vendor who cannot answer those has not measured their own product.

A reasonable way to decide

Ignore the price and read what is published. We ship 4 strategies out of 34 tested and publish all 24 failures with their numbers — not because that is generous, but because it is the only claim on the site a reader has no reason to disbelieve.