Comparing to iPhone 11, iPhone 12 comes with OLED Screen and a faster A14 cpu.
Apple iPhone 12 AnTuTu Overview
The Antutu benchmark score of Apple iPhone 12 is 621879 points. It is better than 93% of the mobile phones as of 5th November 2022.
https://www.giznext.com/mobiles/apple-iphone-12-gnt/benchmar…
you should be paying that or lower for iphone 13 not 12