Please refer to the link..
Japanese Car Auction Grades
R grade cars have had major repairs while RA minor.
But that doesnt mean that RA cars are bad. But you need to identify them so you can get a better deal out of it.
Because for e.g. if a car had a fendor repaired or replaced and everything else is perfect, it will be an RA grade car. So i wouldnt mind buying it if i can get it for lets say a 100k cheaper deal
Cars repaired in Japan are way better than what its done to em here