Does Active geo replication incur costs other than the cost of the Secondary DB?

Hi @Tiya Thank you for posting your question on Microsoft Q&A and for using Azure services.

As per my understanding, you are asking if the secondary DB which a replica of the primary DB will incur any extra charges other than the Price of the secondary DB. Please let me know if my understanding is not correct.
The costing depends on the database, and the costing will be same as primary for secondary database.
"Secondary active geo-replication databases are priced at 100 percent of primary database prices. The cost of geo-replication traffic between the primary and the online secondary is included in the cost of the online secondary."

Each geo-secondary is billed at the same price as a primary database with the same configuration. Backups are always taken on the primary database. If the secondary is configured with a different backup storage redundancy, then after a geo-failover, when the geo-secondary is promoted to the primary, new backups will be stored and billed according to the type of storage (RA-GRS, ZRS, LRS) selected on the new primary (previous secondary). See Explore pricing options

For elastic pool: Each geo-secondary can be a single database or a database in an elastic pool. The databases in an elastic pool are on a single server and share a set number of resources at a set price, with billing occurring at the elastic pool level. Customers can add any number of secondaries to a pool, up to the maximum, without incurring additional charges.

https://learn.microsoft.com/en-us/answers/questions/408058/pricing-structure-for-database-geo-replocation-or.html

Regards,
Oury