Somebody on an internal alias asked, "why is a HDMI cable $60 when the DVD player is also only $60", and here's what I wrote:
McDonalds sells you a hamburger for $0.69 (hypothetical price - I haven't bought a burger from them in quite a while). They charge you $0.89 for the coke that goes with it. The margin on the burner is miniscule (the cheap burger may even be a loss leader). The margin on the coke is about $0.80. People are price-sensitive to the burger price, but they're not price-sensitive to the price of the drinks.