The guy didn't give much explanation, but you haven't caught him in a lie either-because he didn't give details.
The guy never said the car was in an accident, but he also didn't say it was NOT in an accident.
Only if he denies an accident and you find a report of an accident on the carfax or something then you have him on lying.
The guy said everything is new inside, BUT maybe the outside is damaged.
There's only pictures of the left side of the car. Maybe there's a huge scrape down the right side of the car.
If I were in his position and had all the time in the world, I'd to cast a wide net too as my first posting try. Only after he gets tired of people calling and having to explain over and over the reason for the price, then maybe he'll put up the extra info.