@Abhay Sharma See Azure Storage Blobs Pricing | Microsoft Azure for block blob pricing and what impacts it.
Total cost of block blob storage depends on:
• Volume of data stored per month.
• Quantity and types of operations performed, along with any data transfer costs.
• Data redundancy option selected.
If you want to know details for that exact charge, you’ll need to open a case to the billing team. They can investigate and tell you.
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