The plan includes registering and renewing one domain that costs up to $25 a year. A domain that costs more than that is a separate decision, and we talk about it before we register anything.
If we register the domain for you, it is yours to keep. After three months of service, the transfer is free. If you cancel before then, we still transfer the domain to you, for a one-time $50 fee. That condition sits on the domain by itself. It is not a minimum term, and it does not change how cancellation works.
If you already own a domain, it stays in your account. We connect it in whichever way your registrar supports: pointing the nameservers, adding DNS records we send you, or using administrator or delegated access. You never need to send us a password.