Many Shopify stores use promotions like:
Discount Codes
Free Shipping
VIP Benefits
Affiliate Coupons
The problem starts when these benefits stack together.
Common Risk Scenarios
Threshold Discounts
Customer qualifies for free shipping, applies a coupon, but still keeps free shipping.
VIP Customers
Multiple benefits combine automatically.
Clearance Products
Margins become extremely small.
Heavy Products
Shipping costs become larger than expected.
Why It Matters
Shipping is one of the largest operational costs for ecommerce businesses.
Reviewing checkout shipping logic helps merchants keep promotions sustainable while protecting margins.
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