I remember hearing my micro-economics professor tell the class how he snuck onto a ferry in South Korea and when caught managed to convince the captain to let h

I remember hearing my micro-economics professor tell the class how he snuck onto a ferry in South Korea and when caught managed to convince the captain to let him and his friend ride the ferry at-cost, which he estimated to be some insanely low figure like $1. He reasoned that this giant boat was going to make the trip across the river whether or not he was on board, so by letting him ride for any contribution was still more profitable than to kick him off now.