With the problems he has listed on the car (failed airflow meter, rebuilt clutch master cylinder, exhaust leak, worn drivers seat) its more consistent with a 80 - 100,000km car in my opinion. But 99.8% of cars are wound back in Japan so that counts for dick.
See if you can get more photos from him, including engine bay pics and interior pics. As its already in AU, also spot the $400 or so to get it fully checked out before you buy it. $400 is some cheap insurance to make sure youre not buying a lemon.
All in all it looks good, and its still got the stock exhaust!!! Something I have never seen before. Get it checked out, if its all a-ok (there will probably be a few problems with cars that age) go for it