This offer is only for those with a Kindle with Special Offers:
Save $10 on a $20 grocery purchase at Soap.com
Click on offer, then click on the link on the offer page to receive an email with the promo code. Sign-up for this offer expires on January 11.
You'll get an email (right away), a link to the Special Offer page and a promotion code to enter at checkout. Once you have the promotional code, you have until February 11, 2012 to complete your purchase. Like previous offers, this one requires you to use the full checkout process in order to enter your promotional code. Also, like all Amazon sales that use promotional codes, if you have a gift card balance, you must use it for the payment (if there is not a sufficient balance, then you can pick which credit card or other payment to use).
Limit one offer per customer and per device.
Soap.com is a subsidiary of Amazon (and it even talks about Amazon on the offer page); I found many of the same items that I buy routinely from Amazon, so I'm sure I'll find at least one or two items I can get to add up to $20 (and then get half off), although I didn't see anything similar to the Subscribe & Save offers that I take advantage of at Amazon.