And usually the price is much different too. Like 500 yen, which in America might be $4.50 or so, but the equivalent in America (or California at least) would cost maybe 3x as much.
I joke about it with a Japanese friend I made on one of my trips. There's a Japanese family restaurant chain that has some locations in California (Yayoi). In japan it's just another family restaurant where you can get reasonably priced meals (maybe up to 1500 yen but I haven't been in a few years) and in America the same restaurant easily charges $20-25 for regular meals.
Food tends to be very economical in Japan, at least to me as a visitor.
It's not just Japan; every developed nation outside North America has much more reasonable prices for eating out.
It is 498 yen (3.57 USD) and that is taxes included!
On the up side, airport pricing doesn't seem so shocking anymore.