Originally Posted by
whatsinaname
This is because FF vol 2 is still a pre-order on B&N. Even though it has that note at the bottom that it is included in the sale, Pre-Orders are usually not included.
I would suggest you cancel and place an order for FF vol 1, Johns Flash vol 1 + Johns Flash vol 2. That should give you the maximum discount possible as all three are the same price (the 15% price will apply to the most expensive book, the FF omnibus).
Edit: The sale is a bit weird. Absoltue Sandman 5 is not included in the sale, though Absoltue 1 through Absolute 4 are included.