The usage of cloud storage is based on the GB (gigabytes) that your data occupies and the GB per month of traffic generated by your data, from the cloud storage node to the internet (simply put, the data that you or those that you’ve shared files with ; download from the Cloud Storage buckets). You can check the pricing at the cloud storage pricing page. The calculation of your cost of using Cloud Storage will be done at the end of each month and charged according to the billing preferences you defined in your account.