Food is relatively cheap in Japan

The obento or packed food and fruits are relatively cheap compared to Singapore. In the evening, the they are offered at a huge discount of 50%.
The container of cut mixed fruits is at 99 Yen which is S$1.25c. It was packed on 10 July morning and by evening (expiry date is 11 July) it was sold at 50%.
The same goes for the 3 boxes of fried chicken fried rice set, pork cutlet sesame rice set and pork cutlet sandwiches. They all sold for 199 Yen each which is S$2.50.
The currency exchange rate is 100 Yen = S$1.25c or 80 Yen to S$1.