Amazon.com and Mastercard are currently running a promotion that gets you an additional 10% off the first shipment of select “Subscribe & Save” items with promotional code MSTRCRD1. This is on top of the standard 5% off all Subscribe and Save items (including future shipments) and also the Amazon Mom 20% off discount on baby items. Must pay with Mastercard.
Expires October 31st, 2012. Now extended through November 30, 2012.
Eligible items include food, baby, household, pharmacy, and nutritional supplements. If you only want it once, you can still just sign-up, get your 15% off, and then cancel the subscription with a few clicks after the order ships. Or, just wait and Amazon will e-mail you before the next shipment goes out. I forget the exact time period, but you get at least a day or two, enough that I usually just wait for the e-mail to cancel.
Things that I buy with S&S… Tasty Bite Punjab Eggplant and other hard-to-find ethnic foods (also cheaper than local), Diapers (appear to be excluded from this promo), Pamper’s Baby Wipes (net cost 1.8 cents each).