It looks free. But it's not 100% clear.
AWS will pay us to perform this service once per workload. There are some requirements for us to get paid by AWS, including leaving your workload in a more "Well-Architected" state than when we first engaged. Regardless of the requirements on us, at the time of this writing, there is no obligation or cost associated with Cloud303 performing this server, save for:
The Credits paid out for this service are how we get paid. If they happen to be sent to you, we kindly ask that you provide the code to us.
There is a survey. It's 2-3 short questions. Please fill it out, it's how we get paid.
If we don't get paid for any reason we do not hold our clients responsible. It is our risk to take.