The Dan Brown book that comes with the 600 from Waterstones is in the form of a gift card for £9.50 that should be somewhere in the box. I don't need the Dan Brown book, so I tried the card for other purchases, and it worked! It's not limited to the Dan Brown book - bonus
(Am I the only one who's finding all the anti-600 threads on here a bit scarey? I love mine!)