I’ve had to make and pay for an unfortunate number of Iridium calls. They can be crazy expensive depending on carrier, who all bill them as a call to an international line in the country of “Satellite”. Usually you pay your carrier’s fee for outgoing and it’s cheaper/free to receive the calls.

It seems like cell carriers always charge more per minute for satellite calls than any satellite provider does, so I’m guessing they just set their rates conservatively to always make a profit on their end. And the demand for satellite calls seems like it would be pretty inelastic.