If someone had the time and resources, they could start swapping out original parts for restamps 30 seconds after the inspection ends. Or if a certificate is just a few days old, strange things can happen like a piston coming through the side of the block. Now don’t get me wrong, having a car looked at is great. But in my mind - the older the inspection is, the less value it has. Buyers ALWAYS need to do THEIR OWN homework and inspection.