THEM: i'd like the book and the hats you keep the balls?  YOU: could i take the balls and get the book as well?  THEM: that was the main item in my initial offer. book and 1 hat for me you get rest?  YOU: hats are meaningless for me, so you may as well take them both. so i'm taking all balls and you get the rest?  THEM: i think that's the best split for the both of us.