Notice from this interactive chart that Japan imports hardly any food (click on the small icons at the bottom). There is hardly any fruit imported for example. This is good for Japanese farmers. Although it is expensive, I do enjoy the top quality local fruit and vegetables in Japan. Nothing beats the hand cared quality of Japanese fruits. However I do think it leads to some lack of competition. For example the incredibly expensive watermelons still have seeds, whereas in Australia my home country, I can buy very cheap, crunchy, and tasty watermelon with no seeds.