@Sunny Welcome to Microsoft Q&A Forum, Thank you for posting your query here
Enabling the SFTP endpoint has a cost of $0.30 per hour. We will start applying this hourly cost on or after December 1, 2022.
Transaction, storage, and networking prices for the underlying storage account apply. To learn more, see Understand the full billing model for Azure Blob Storage.
Clarification on SFTP on Blob storage pricing
If you still find any difficulties in pricing/billing, Free billing and subscription Azure Support Options | Microsoft Azure on management support has been provided.
Please let us know if you have any further queries. I’m happy to assist you further.
----------
Please do not forget to and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.