Find 20-percent-off coupon codes for Amazon at websites such as Groupon and RetailMeNot. These coupon-aggregating sites offer a variety of deals for the popular online retailer.
Groupon lists a range of Amazon coupon codes, including many for discounts of 20 percent or more on select items or departments. Browsing the site’s listings, users can see how many times a coupon has been used and what percentage of other users recommend it.
RetailMeNot also collects a range of coupons for Amazon, and users can browse the website specifically for coupons that offer a percentage discount on items. Like Groupon, the site allows users to see how many other people have used a coupon and whether other users recommend it.