Maybe he’s lying, maybe he’s deceitful, but it doesn’t change the facts.
What facts are not changed, that he wants a better price? I am planning to buy and ship a new box, in good faith, but its good to be skeptical and pay attention to small clues.
My wife and I bought a car from a private seller when we lived near DC and we found out several years later from the US Justice Department that the car had 100,000 more miles than were listed on the title. We should have paid more attention when we had it inspected and the mechanic said “its been run hard.”