Of course best idea is to check everything possible before buying but did you ever get scammed buying an instrument? If so, how? Maybe you trusted the seller's word about originality and didn't check the electronics or neck and it was replaced? Or maybe you checked it but it turns out after a while that the truss rod was changed? It had a refinish at some point? Headstock was broken and glued back and covered by paint? What are the examples of the things that you can miss even after a thorough inspection? Tell us how did you get scammed!