THEM: hello! what item do you want the most?  YOU: if i could have the book and one of the hats that would be swell  THEM: i would ideally like one of each item. i am willing to negotiate with the balls or hats, but not the book.  YOU: welp that book is worth some big ol points to me if i give up the book then i need literally everything else to compinsate for it.  THEM: i am willing to give you both hats and both balls in exchange for the book.  YOU: deal.