One of the biggest additions to the new iPhone is the so-called 3-D Touch feature, which allows users to carry out different tasks depending on how much pressure they put on the screen.
IHS said the screen costs USD 52.50, making it the most expensive compenent of the 6s Plus.
Apple has also upgraded its main camera to 12 megapixels in the iPhone 6 and 6 Plus from 8 megapixels in the previous versions. The front-facing camera has also been upgraded. IHS said the cameras cost USD 22.50 on each device.
IHS noted that the decreasing cost of many iPhone components was helping Apple's profitability. A 16 GB now costs Apple only USD 5.50 per unit, but the sale price difference between a 16 GB and 64 GB model was steep, IHS noted.
"Flash is now so cheap it's almost irrelevant, but Apple monetizes this difference with consumers, to the tune of USD 100 for each additional step-up in memory capacity," Andrew Rassweiler, senior director of cost benchmarking services for IHS Technology, said in a news release.
"For example, a 64 GB iPhone now costs Apple about USD 17 more to make than a 16 GB iPhone, but Apple charges iPhone buyers USD 100 more for the increased memory. This is part of Apple's ongoing strategy to improve profits by selling a product mix that is heavier in the higher-end iPhones."
Apple sold a record 13 million iPhones 6s and 6s Plus units three days after their launch, the company said on Monday, more than any previous first weekend sales results.