Checkout quietly leaks margin: promotions stack past your limit, reps over-discount, and loss-making orders slip through. Sphior Margin stops the bleeding with Shopify Functions — capping discounts so they never exceed your limit, blocking carts that break your rules, and controlling payment and delivery by order conditions. It then measures the over-discount prevented from your real orders and shows it on a dashboard, kept separate from estimates so the numbers stay honest.

• Discount cap: apply tiered discounts that never exceed the limit you set
• Validation: block orders by quantity, product combinations, or required fields
• Payment and delivery rules: hide, rename, or reorder options by order conditions
• Quantity-based volume discounts for B2B and wholesale buyers
• ROI dashboard: see the over-discount prevented, measured from your orders