Alexandru Trandafir Based on the information you provided; it seems like the cost of your Azure Blob Storage was higher than expected. There could be several reasons for this.
Firstly, it's important to note that the cost of Azure Blob Storage is based on several factors, including the amount of data stored, the number of transactions performed, and the amount of data transferred. If you were performing a large number of transactions or transferring a lot of data, this could have contributed to the higher cost.
Additionally, it's possible that you did not configure your Azure Blob Storage instance correctly, which could have resulted in higher costs. For example, if you did not enable soft delete or set a retention period, this could have resulted in data being stored for longer than necessary, leading to higher costs.
To better understand the cost of your Azure Blob Storage, you can use the Azure pricing calculator to estimate the cost based on your specific usage patterns. Refer https://azure.microsoft.com/en-in/pricing/details/storage/blobs/.
If you need further analysis of your cost calculation, please reach out to Azure Technical Support.