This deal has ended.
Amazon currently has a selection of Pampers and Luvs Diapers on sale plus that combines in some cases with two 15% discounts. The first is 15% via code PMPLUVJN. The second is that for some but not all diapers listed as "Ships from and sold by Amazon.com" there is an offer to sign up for Amazon's "Subscribe & Save" service by selecting a recurring shipment increment and clicking "subscribe now." It is a free service that can be cancelled at any time and also includes free shipping on your purchases. Even better, there is no sales tax (except KS, KY, ND, NY, WA).