u/AkinoPai

I bought a CORSAIR RM850e ATX power supply on Amazon supposedly new though it arrived in a Thermaltake 600W power supply box, and the unit itself has some minor, barely noticeable scratches. How bad of an idea would it be to use it in a new PC I'm building? I spoke with Amazon; they merely apologized and offered to refund me $17 while letting me keep the power supply, but I'm not sure if using it would be too risky, as it shows every sign of having been used.