Do you have anything to prove that you got your stuff from there?
As for PSUs dying, it all depends on who makes them and even then they can just stop working from time to time. Generally the better manufacturers use higher quality materials in their PSUs so these generally don't fail as often.
As for PSUs dying, it all depends on who makes them and even then they can just stop working from time to time. Generally the better manufacturers use higher quality materials in their PSUs so these generally don't fail as often.