They had it for sale at best offer, then refused to sell it for the best offer they got.
I don't know of any Ford engine that goes a million miles easily.
I think they like to misrepresent the truth. I wouldn't trust anything they say. I just bought the wrong size could mean the tranny is falling apart or worst.
If still interested in doing business with them, give the VIN to your insurance carrier and see if they will write you a policy.
Then have a mechanic check it out. Contrary to what they say, 180,000 is not being just a baby.