title: Confirmation of how to calculate bigquery query costs
body: <p>I want to double check what I need to look at when assessing query costs for BigQuery. I've found the quoted price per TB <a href="https://cloud.google.com/bigquery/pricing" rel="nofollow noreferrer">here</a> which says $5 per TB, but for precisely 1 TB of what? I have been assuming up until now (before it seemed to matter) that the relevant number would be that which the BigQuery UI outputs above the results, so for this example query:</p>
  
  <p><a href="https://i.stack.imgur.com/05i0A.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/05i0A.png" alt="BigQuery UI"></a></p>
  
  <p>...in this case 2.34GB. So as a fraction of a terabyte and multiplied by $5 this would cost around 1.2cents assuming I'd used up my allowance for the month.</p>
  
  <p>Can anyone confirm that I'm correct? Checking this before I process something I think could rack up some non-negligible costs for once. I should say I've never been stung with a sizeable BigQuery bill before it seems difficult to do.</p>