I sometimes wonder how much market research the music and book publishers have (not) put into their pricing models. If they sell 1,000 copies at $10/each or 3,000 copies at $4/each, then tell me, at which price point do both the publisher AND consumer benefit?
BTW, I think we're seeing this with iOS and Android apps. There are a lot of promising apps out there for two or three dollars that I am very willing to take a risk on. A lot of app developers are obviously going for volume sales.