At least AWS gives me an invoice each month with a break down of fees. GCP just sends an invoice for the total amount. No detail, no breakdown. And I have never gotten any of GCP's many different pages under their billing system to spit out any numbers that make sense. Pick your poison?
If I remember correctly, they charge for the BigQuery table you use for the detailed export. In other words: there's a charge for seeing detailed charges!
All other clouds provide a detailed cost breakdown report for free.