The prices there *are* incredible.
A friendly warning tho about interfacing with Apple hardware: the optical port does not accept the standardized TOSlink connector shape. The Mac Mini, Airport Extreme etc use a connector that looks extended. The optical cable in the Apple Store that's called HDExtreme has an adaptor that allows the connection. The Belkin cable in the Apple store has the "normal" TOSlink connectors that *won't* work with their port. My local Apple Store didn't have the right cable either: had to order the one with the adaptor, and have it shipped. Strangely, the "Genius's" in the Apple store had no idea what I was talking about when I asked for the correct style optical cable.
Apple decided to make their recent audio out ports as a combo port that will take a standard mini jack, as well as an optical cable....if you have the right adaptor.