Apple announced the iPhone X with an eye-watering price of $999 on September 12. Industry insiders in China did an investigation how much each component costs and came up with the total cost of the iPhone X. The sum is $412.75, or 60% cheaper than the retail price. The most expensive component is the 5.8" OLED panel manufactured by Samsung. It's price is $80 per unit which is way higher than any other part. The NAND memory, acquired from Toshiba is $45 for 256 GB. The 3 GB RAM is half - only $24. Apple announced the A11 Bionic chipset, which is built by TSMC on their 10 nm...
Source: http://www.gsmarena.com/iphone_x_real_cost_leaks-news-27293.php