New Year's Day traditional food in Japan

These are posters of traditional food eaten during New Year's Day here in Japan.  

I went over to the nearest 7-11 store to get something for dinner one day and saw these posters propped up on the shelves. 

The Japanese nowadays buy these foods in sets.  No, they're not cheap.  Just look at the prices on the posters for each set.  But to Japanese housewives, they'd rather buy these sets of foods than spend days and days during the last weeks of the year, preparing and cooking all these  for New Year.

Each kind of food in the sets symbolize something:  prosperity, strong family ties, good health, etc.  Things everyone wish for themselves and the rest of their loved ones for the coming year.