Good quality food in average restaurants also avaliable. Fish restaurants more expensive than lamb, beef and kebap restaurants. Posh resturants are more expensive.
Public transport is cheaper than taxi. It is more important; time saving with metro and feryboats, rather than taxi. Taxi is also not very expensive but be sure about rush hour.
We got information about prices in Istanbul on food in cafes and restaurants, products in supermarkets, accommodation rental, real estate and transportation costs based on the data of 8 people.