Car rental in Eleuthera is very informal. There is no paperwork, simply meeting one of the locals at the airport, who solicit your business, set a price, and give you the keys.
Usually the cars are slighted aged, but in good shape. Occasionally you can get a new Jeep. Prices vary, depending on how long you want the vehicle.
Let us know if you want us to arrange a car or Jeep rental!!