@Shubham Mehta Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
Adding more information to the above response! You can use Azure Pricing calculator for Price difference between LRS and RA-GRS of storage account (estimate/charges) and based on your region and requirements.
There will be a one-time fee equal to the sum of all data multiplied by the geo-replication fee in the primary region. For data stored in the Archive tier, there will also be a charge to read all the data (both read operations per 10,000 blobs and for data retrieval per GB) from the primary region and to write all the data (write operations per 10,000) into the secondary region.
Note: . RA-GRS is an option on top of GRS. So, the regions defined for GRS are the same for RA-GRS
If you still find any difficulties, I would recommend to contact Azure Billing Team, Billing and Subscription team would be the best to provide more insight and guidance on this scenario: https://azure.microsoft.com/en-us/support/options/ (it's free support. )
Please let us know if you have any further queries. I’m happy to assist you further.
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