JavaScript Multiple Arrays in Object

I'm trying to display all of the items in my list below. I organized them as such in order to filter them out.

For example, I want all the titles to be separate from the array items they contain (so that the titles will display as headers and the items as regular text.

Here is my code so far:

var general = { 
    "Hardcover" : { 
        ["Book A",4],
        ["Book B",6],
        ["Book C",5]
    }
    // ... other options 
};

for (var title in general) {
   var title = ...; // assign the title variable
   $('body').append("<h2>" + title + "</h2>");
   for(var items in title) {
      // assign item variables separately 
      var itemTitle = ...;
      var itemPrice = ...;
      $('body').append(itemTitle + ": $" + itemPrice);
   }
}

So the final output would look something like:

Hardcover

Book A: $4
Book B: $6
Book C: $5

I made a quick fiddle below with my full list: http://ift.tt/1GOX7nK