A more modern example would be dashcams. The vast majority of products on the market are using the same sensors and the same SoCs, and the image quality difference is practically negligible between <$100 units and $400 ones. A dashcam with the image quality of even a GoPro doesn't exist, no matter how much money you are willing to spend.

https://www.youtube.com/watch?v=4AnyhHl3_tE