I checked the number of shots of my secondhand camera, SONY α7 III ILCE-7M3.
exiftool
Using exiftool, I was able to get shutter actuations count.
The number of shots taken by the SONY α7 III ILCE-7M3 was 1,519
Checked the shutter count of the SONY α7 III ILCE-7M3
Shutter counts