Recently I was at the MSP airport making a connecting flight to Seattle and I ran across an iPod vending machine. They had about every make and model of iPod in stock in the machine. More than that they had a whole bunch of iPod brand and third party brand accessories (like power adapters and noise cancelling head phones). At first I was perplexed. Is anybody really going to buy a high end item like this at an airport? I got my answer within a few seconds. A guy stopped, looked at the machine for a minute and bought a pair of high end headphones. Within 10 minutes I had seen 2 purchases.
Somebody clearly did their marketing home work!