Airport pricing

So I'm in LAX and I want some headphones. I go to the gift shop but mainly for shites and giggles. The headphones cost 2.99. I thought it was a typo but it wasn't. 2.99. That's less than a quart of water cost in the airport. Should headphones cost more than water? It's good to know that all those drought stricken villages around the world can at least be sent headphones.