All books are judged by the cover

This essay by Paul Graham contains two insights which are both surprising (at least to me) and undeniably true. 1) The publishing business is, and always has been, selling style, not content. Books are (and always have been) priced based on what the cover looks like, not on the quality of information contained in them. 2) The iTune store is making money not by selling songs to people, but by taxing them.

Graham's essay is a fantastic read. Based on content.