It is not a law firm.
In practice
Nobody here is admitted to practise in your jurisdiction, no bar or law society regulates this, there is no client account and there is no retainer. It is software that reads published law and shows you what it says.
What it costs you
No legal professional privilege attaches to anything you type here, and there is no professional indemnity insurance standing behind the figure. If your claim is large, contested or bound up with something else, that is a reason to take this output to a lawyer rather than instead of one.