There is a fixed one-time fee when creating the passport. This fee depends on 2 factors: 1- How much the verifier charges for user verification; 2- The user's document validity period. This fee is designed to reward verifiers for completing KYC verification as well as reward miners. Once the passport has been created, there will be no more payments until you need to create a new passport once yours has expired. When you have your own Hashbon Pass, your registration process and every future KYC verification turn into a single click.