Point taken, but keep in mind this probably isn't the artist's only song, the sound guy's only mix, or the recording equipment's only use. What is the marginal cost of using that mixing board to do one song? How many people are buying the song? As a digital good the per-unit cost of selling the song to another person is next to nil. It's not obvious to me what a fair price is for a given piece of music, but it is obvious that if say everybody in the world bought a copy at $0.01, nobody involved in the production would be going hungry.