For those who keep saying these estimates do not account for R&D, why don't we just look at those numbers. Apple publishes them every quarter. They spent $1.9B this quarter. (http://appleinsider.com/articles/15...ch-and-development-swells-again-to-19-billion). Now, they sold (61.17m [iPhone] +4.5m [Mac] +12.6m [iPad]) = 78.27m devices. So that's $1900m [R&D] / 78.27m [devices] = $24.27 R&D per device.