Just quoted my first large commercial auto. 7 luxury vehicles, 4...

Just quoted my first large commercial auto. 7 luxury vehicles, 4 drivers in WA state doing Passenger Transportation (for hire). 1.5m CSL, matching UIM and full coverage $1,000 deductibles for $272,440/yr. I know each risk is different, but that is massive. Does that seem right? Honestly, a bit lost on this.