As of late 2025, additional storage can cost around $0.20 per GB per month, which can exceed $2,000 per TB annually.
Before purchasing more storage, it is recommended to manage site storage limits, remove old versions of files, or archive inactive data. buy sharepoint
To give you the most accurate purchasing options, I can help you find: for a certain number of users. Which Microsoft 365 plans include the features you need. How to check your current usage before buying more. SharePoint Online out of storage space - Microsoft Learn As of late 2025, additional storage can cost around $0