How are the data storing and unique user processing billed?

The data storage and query costs are paid directly to Google in accordance with their Google BigQuery pricing. Charges are billed through your Cloud Billing account.

OWOX BI subscription fee depends on the selected plan, as well as the number of ad cost data pipelines and unique users that you've included in your subscription. If the number of unique users exceeds your subscription limit during the billing period, you'll be charged an additional cost.