Apple really makes the big bucks on those tablets with more NAND memory. While the difference in cost between a 16GB flash memory chip and a 32GB one is $16.80, Apple raises the retail price by $100. And we now can put a price on Retina display. The display on the Apple iPad 2 cost $57 while it is now $87 on the new iPad meaning that the Retina display cost $30 more per tablet to include. The display is also the highest cost component in the device.
Samsung, Apple's arch enemy in the courtroom, is Apple's BFF in the clean room. According to iSuppli, 40% of the new Apple iPad's internal parts are from the Korean manufacturer including the LCD screen (with Sharp and LG in the bullpen), the A5X processor, and the NAND memory (along with Toshiba and Hynix). With iSuppli thinking that Samsung is also responsible for the battery in the unit, Sammy's total percentage of its exposure to the internal components of the iPad could run close to 50%.
source: iSuppli via MobileSyrup