What are prices like for food?

To be more specific: could you tell me the average price of essential groceries such as : milk, eggs, bread. Also: do the grocery stores sell pre-made items such as chicken fingers, fish fillets, fries etc.

Are there fast food places? What is the average price of a meal out in a fast food place, and a normal restaurant?

While food isn't exactly a limiting factor for me, it is important.

Cheers,

Silenthunder