Sony's new PlayStation 4 retails for $399, but – according to this AllThingsD report – the system costs $381 to make. This is according to research firm IHS iSuppli, who are old hands at electronics teardowns and cost analyses. The firm tells AllThingsD that the components and the cost of assembly comes to roughly $381.
Two of the most expensive components in the system are the AMD-designed APU and its 8GB of GDDR5 RAM, which cost about $100 and $88 respectively. Other costs include the 500GB hard drive (about $37), the Blu-ray drive ($28), and the controller ($18). The size of the chip also weighs heavily on the cost of making the new console system, according to researchers.
Of course, what is not factored into teardown costs (beyond what's in the plastic case) are retailer margins, research and development, advertising, and shipping costs.
It should also be noted that the magic number of $381 that iSupply comes up with is an estimate.
Source: Ars Technica