Margin Defender: Block Coupons

Exclude specific products from discount codes

by CosModo · Launched: March 2026

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About Margin Defender: Block Coupons

Ever run a 20% off Black Friday sale, only to realise a customer used it on a premium product with a 10% margin? Margin Defender is your failsafe! Margin Defender prevents you from accidentally discounting premium items that should never be on sale. Simply tag specific products as "protected," and this app will block checkout if any discount code is applied while those items are in the cart. Designed to be the simplest, most efficient way to protect your bottom line from unintended discounts. Shield low-margin items from coupon abuse and never sell at a loss Instantly block checkout if a discount hits a protected product. Total coverage: Protects against manual codes and auto-discounts. Failsafe design ensures checkout always works, even if validation times out. Show more Show less

Last verified: July 21, 2026 · Fresh