Thinking of getting next month when I get paid I have gta 6 bought already

I have bought GTX3070 from CeX. This was my first interaction with the company.

Stuck it into my PC, reinstalled windows, drivers, the usual stuff. This PC is for my simrig, and its gonna run iRacing exclusively. Loaded into a test drive, and within 1 minute the GPU shuts off. Weird, restarted the PC tried again, same thing. 3rd time, I started up HW monitor to see what's going on. Hotspot at 107°C. Which is ridiculous for iRacing.

Now, I know how to mend this. Already ordered thermal pads and PTM7950. After this, its Afterburner to see what's going on. If that doesn't fix it, Ill return it.

But it got me thinking. Your average shopper will not know how to fix this. All they will know is that they got a faulty graphics card. I'm assuming CeX sticks these into a motherboard to see if they are working. Is it that much trouble to run a stress test? It takes less than 5 min and the issue would have been spotted immediately.