Do you think enums are simple? Well, they are not. Look at the following code

public enum Price

{

    None,

    Cheap,

    Inexpensive = Cheap

}

public static void Main()

{

    Console.WriteLine(Price.Inexpensive);

}

Ok so I hear you saying, "It will print Cheap". Cool stuff. You're right! If multiple enum members share the same value, the "main" member acts as a source for ToString. Now we move on - I will just add a few more members.
More...