Amazon RDS Proxy is priced per vCPU per hour for each database instance for which it is enabled. The price depends on the RDS instance type used by your database, and may vary by region.
The Amazon RDS Proxy preview will be free to use until the end of 2019. Starting January 1 2020, you will be charged for Amazon RDS Proxy.
Partial hours are billed in one-second increments with a 10-minute minimum charge following a billable status change such as creating, starting, or modifying.
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