Ecommerce / Margin & retention

Grow the orders you actually want more of.

A record sales day feels good. I want your team to know how much of it the business keeps. Before you scale a promotion, follow the order through the discount, product cost, delivery, return window and next purchase. That is where a more useful growth plan begins.

My perspective · Patrick Breen · 5 min read ·

Start with a number you can reconcile

Shopify defines net sales as gross sales minus discounts and sales reversals, excluding shipping charges and taxes. Its sales and payments reports answer different questions. [1] Know the definitions in your own platform before copying a dashboard number into a budget.

For order economics, identify the revenue your business retains, then subtract product cost and variable expenses such as payment fees, packaging, fulfillment and delivery. Treat customer-paid shipping and your shipping expense consistently. Include the expected cost of returns without subtracting the same refund twice. The contribution remaining still has to support marketing, fixed overhead and profit.

Calculate what the promotion has to earn back

Consider a hypothetical $100 order with $60 in variable costs. You keep $40 before marketing and fixed costs. Offer a 20% discount with those costs unchanged, and you keep $20. You now need twice as many orders to produce the same contribution before any increase in advertising or staffing.

That does not make every discount a mistake. It makes the objective matter. Are you clearing inventory, introducing a product, recovering an abandoned purchase or acquiring a customer likely to return? Give the offer a defined audience, a cost ceiling and a review date. Use the ecommerce margin calculator before the creative goes live.

Your promotion should have a financial job. 'More orders' is not specific enough to tell you whether it did that job.

Separate product demand from acquisition quality

Review contribution by product family and customer cohort. Shopify's customer cohort reporting groups customers around acquisition and lets you examine later purchasing behavior. [2] Compare groups at the same age: a customer acquired last week has not had the same opportunity to reorder as one acquired six months ago.

I look for the relationship between the first product, the first offer and what happens afterward. A campaign can produce an attractive first-order cost while bringing in customers who only buy deep discounts. Another may start slowly and generate stronger repeat contribution. Let actual behavior earn that confidence; do not fund today's spending with an optimistic lifetime-value assumption.

  • Track first-order contribution after acquisition costs.
  • Review repeat-purchase contribution after a consistent observation period.
  • Compare cancellation and return reasons by product and acquisition source.
  • Check inventory availability before increasing spend on a winning offer.

Help the customer choose correctly

In automotive ecommerce, fitment and installation questions can be central to the buying decision. In other categories, the uncertainty might be sizing, compatibility, materials or delivery. I would improve the answers customers need before adding another layer of promotional urgency.

For discovery in Google’s AI features, Google says the established SEO fundamentals still apply; there is no special optimization that guarantees inclusion. Useful text, accessible pages, accurate structured data and current Merchant Center information remain relevant. [3] Publish specifications, original photographs, limitations and real answers your support team can verify.

Use AI where your team can check the work

AI can help draft product-page variations from an approved specification sheet or group de-identified return reasons for review. Keep a human responsible for compatibility, safety claims, pricing and delivery promises. A plausible product description can be expensive if it promises something you cannot deliver.

Heading into 2027, I would prioritize a few dependable advantages: accurate product information, consistent fulfillment, a measured repeat-purchase program and a clear view of contribution. Your next campaign has a better foundation when your team can explain which customers and orders you want more of—and why.

Put it into practice

What I would do this week

  1. Calculate contribution on three important products using actual discounts, fulfillment costs and a clearly stated return assumption.
  2. Review the most common pre-purchase questions and return reasons. Improve one product page where the answer is incomplete.
  3. Compare two mature customer cohorts. Use their observed contribution and repeat behavior to set the next promotion's limits.
Calculate your order contribution

Sources & context

Checked October 7, 2026. I use these sources for the facts and definitions noted above. The questions and suggested actions reflect my perspective; adapt them to your business.

  1. Shopify: Finance reports

    Defines net sales and distinguishes sales, costs and payments reporting.

  2. Shopify: Customer reports

    Explains acquisition, retention and customer cohort reporting.

  3. Google Search Central: AI features and your website

    Google's guidance on eligibility, established SEO practices and the absence of guaranteed inclusion in AI search features.

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