Another factor that played a role in raising the price of iPhone X might be its “Super AMOLED” technology compared to older LCD technology used in iPhone 8.
$36 stainless steel chassis of the iPhone X versus $21.50 aluminium jacket of iPhone 8 is another pricey choice of Apple for the iPhone X. This is because steel is less likely to bend when flexed as compared to aluminium.
While Apple has declined to make any comments on the analysis, these pricey choices might be a result of their lessons learned from the past.