Hi @Jihoo Byeon
The correct information is that Azure Static Web Apps charge $0.20 per GB for bandwidth overage, as stated in the official Azure static web apps pricing details.
The Azure Pricing Calculator may not always display all potential overage charges, which can lead to discrepancies. For the most accurate and up-to-date pricing, always refer to the official Azure pricing details page.
Please accept as "Yes" if the answer provided is useful, so that you can help others in the community looking for remediation for similar issues.