Groan! Deals like this will be the death of My Budget
I Ended up getting a couple of books with this discount as te additional 20% bought down the prices to a level I was willing to pay.
Got the New Pratchett Book, Unseen Academicals which this additional discount (+ Club) bought the price down to a more reasonable level (around $11) closer to the B&N price.
this on top of the Money I spen at Cyberread Yesterday (Theri 40% Sale) means that I've already spend most of my budget for the month and have about a dozen books now on my To read list

Also got Spice: The History of a Temptation Which looks like a really intresting book.