Earlier quoted context omitted.
The Ayatollah Booth is egg on the US's face regardless, but $2M/ship is about $1/barrel for perspective. Spot price is $95/barrel right now.
Not convinced it will happen. What would prevent Saudi Arabia from retaliating and introducing a special fee on all ships coming from Iran. It's not like intercepting those massive cargo ships in a small sea is of any difficulty for a well funded military.
Militarily Iran is a giant and Saudi Arabia is a minnow.