ディスプレイが液晶からOLEDになったから当然といえば当然だが。

"However the $279 cost of repairing the base iPhone 12’s display has increased by $80 compared to the iPhone 11"

Repairing the iPhone 12’s ceramic-protected OLED display costs $279 - The Verge
https://www.theverge.com/2020/10/19/21522751/iphone-12-pro-screen-repair-other-damage-costs-applecare-plus-warranty