It's actually much larger. The upgraded have much higher profit margins. >"The incremental cost of the additional NAND flash memory to Apple is only $9.60 for

It's actually much larger. The upgraded have much higher profit margins. >"The incremental cost of the additional NAND flash memory to Apple is only $9.60 for the additional 16GBytes of memory and $19.20 for an additional 32GBytes of memory. This means that compared to the 16GByte model, the 32GByte version of the iPad mini generates about $90 in additional profit for Apple for every unit sold. For the 64GByte model, Apple’s profit is about $171 higher than the 16GByte version."