Your comment, in short, shows the ignorance of the average person thinking that the cost of the individual components equals the cost of the assembled product fully developed. Unfortunately nothing is going to fix the stupidity of the average person out there.
I don't think its stupidity at all. The gent is looking at the cost and making inference from the advertised price. A question: Can you tell me how much of a price difference in manufacturing would a retina iphone 4 screen cost now? and after R&D costs pre 2010? Now how much R&D was required in minimizing a retina screen? not as much as it was to create the screen on the iphone 4. My point is there is some R&D but nothing that equates to the profit maximizing retail price.
With that said, I will be probably be buying one but not just yet.