Amazon.com customers get an additional 10% discount off select Subscribe & Save items when you use your MasterCard® card (for a total of 15% off of Amazon’s everyday low price).  Offer valid from September 1, 2012 through October 31, 2012 or while promotional funds are available. 
The 10% discount you receive from using your MasterCard® card is good only towards your first shipment of new subscriptions of select Subscribe & Save items.  Promotional code may be used towards multiple Subscribe & Save purchases.
To receive the additional 10% discount off towards your first shipment of eligible Subscribe & Save items:
1.    Shop for eligible items.
2.    Choose the Subscribe & Save option and select your delivery frequency.
3.    Click Subscribe Now.
4.    At checkout, you must select or enter your MasterCard® card as your method of payment.
5.    At checkout, enter promotion code MSTRCRD1 to apply to your order.  Both the 10% discount you receive from using your MasterCard® card and the 5% Subscribe & Save discount will be reflected in your cart.
6.    Click Sign me up to get 15% off your first shipment and continue saving 5% on your recurring deliveries.
7.    Continue shopping for eligible Subscribe & Save items.

10% off Household Supplies

for $21.74 ($1.00 Coupon/Subscribe and Save)
and additional 10% off your first Subscribe & Save Order if you use a MasterCard®

for $8.41 ($0.25 coupon and 5% Subscribe and Save)
and additional 10% off your first Subscribe & Save Order if you use a MasterCard®

for $7.83 (with 5% Subscribe & Save)
and additional 10% off your first Subscribe & Save Order if you use a MasterCard®