Reading through comments, folks have used on box sets, Lego books, cook books, etc.
Take an extra 30% off any book offered by Amazon.com from now until December 1st. Enter code BOOKDEAL at checkout. Here's how [amazon.com](restrictions apply).
Terms & Conditions
The promotion is valid for a limited time only, from November 27, 2013 at 9pm PST to December 1, 2013 at 11:59pm PST. Amazon reserves the right to modify or cancel this offer at any time.
Offer only applies to products sold and shipped by Amazon.com.
Limit one promotional code per customer and account.
The maximum benefit you may receive from this offer is $10.
Offer good while supplies last.
Offer is non-transferable and may not be resold.
The offer discount will be allocated to the highest priced book in your order.
If any of the products or content related to this promotion are returned, the value of the offer will be subtracted from your return credit.
This promotion may not be combined with other offers, including promotional certificates.
Items must be purchased in a single order and shipped at the same speed to a single address.
If you violate any of the Terms & Conditions, the promotion will be invalid.
Void where prohibited.
Shipping charges may apply to discounted and free promotional items.
Offer does not apply to Amazon Gift Cards.
Been able to apply code to my recent order via CS.