I think the design alone is worth the premium. Apple products look classy and like works of art.
Chinese slave labor does indeed produce impressive results. Not worth twice the cost in my opinion though (but I am a simple guy). Honestly though, Apple products have only started looking like pieces of art over the past few years. There is no variety though! They are all the same! Remember the all white plastic Macbooks ? Those things looked like crap.....they were built like crap too. The new aluminum ones are a great design however. But still an outrageous price. Remember, Apple did not become the most profitable corporation in the world due to sales alone. Their profit margin in mind blowing.