Promo Codes & Coupons

Real Amazon promo codes come from sellers, not from Amazon sitewide. Here are the five places working codes appear and the signs of a fake coupon site.

Coupons, promo codes, Subscribe & Save and Lightning Deals: which discounts stack on Amazon, in what order to apply them, and why stacking sometimes fails.

The three main Amazon discounts explained side by side: how each works, where you find it, and which ones you can combine.

Expired, claimed out, wrong variant, wrong seller: the nine reasons a promo code fails and what to do about each.

Where the promo code box is at checkout, how coupons and codes stack, and the mistakes that make codes fail.