It depends on the inside length, width, and height of the car. The average is 1000 GBP.
The average price of daily car rental in Crete, Greece, is twenty-five Euro per day. This information is according to "The Best Rent-a-Car" website in Greece.
Greece has car hire available from many companies that cover all of Europe such as Europcar or Avis. They also have their own Greek car hire firms such as Greeka.