I guess it's a story of manufacturing in volume: at Fry's, I recently bought my wife this "Periscope Hardcover Booklight"
It's a piece of (fake?) leather and two LEDs, made in China, and priced (by Fry's) at $30. Less than ten feet away was MicroATX motherboard (not this model, but similar), with socket 775 support for Core 2 Quad procs and all the bells and whistles. For $60. Likely made in China.
Fallacious reasoning to be sure, but still a big delta in what you can get for another $30.