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For years I made a living playing at universities.
One time a college far away in Ohio, about a 12-hour drive, asked what I would charge to do a two-hour show.
I said, “$1500”.
She said, “Oh, that’s a bit too much. What would you charge to do just a one-hour show?”
I said, “$2000”.
She said, “No, wait, you’ll be performing less, not more!”
I said, “Yeah! Exactly! What you’re paying me for is to get there! Once I’m there, playing music is the fun part! If you tell me I have to get back in the van after only an hour, and drive home, then I’m going to charge you more than if you let me play for a couple hours first.”