You can be hired for time, and hired for money. Of course, you can be hired for both.
If you’re solely hired for time, make it count. Somebody chose to use their time to listen to what you have to say. They can find another podcast to listen to just as quickly as they decided that yours wasn’t interesting.
People might be forgiving if you waste their money. That’s why we have money-back guarantees.
But there’s no such thing as a time-back guarantee.