--- title: "Bestsellers were priced below their true landed cost" description: "Freight and packaging inflation had never been passed into unit economics. Marketing & margin audit: $59k/yr in margin identified, evidenced in 6 days." url: https://marginfix.ai/cases/bestsellers-were-priced-below-their-true-landed-cost/ lastmod: 2026-10-24 --- Bestsellers were priced below their true landed cost. [Request an audit →](/book/) Ecommerce · Pet # Bestsellers were priced below their true landed cost. This marketing & margin audit surfaced **$59k in annual margin** in a DTC / Ecommerce business, evidenced, senior reviewed, and delivered in 6 days. $1–3M annual revenue Pet Focus: Product pricing +$59k margin recovered / yr +9pts contribution margin 6 days to findings Contribution margin on the three bestsellers Before audit −2% → After fix +7% ## The business A pet supplies retailer had built its reputation and much of its volume on a handful of bestselling SKUs, and hadn’t revisited their pricing in roughly two years. That period happened to coincide with a sharp, sustained rise in inbound freight and packaging costs, exactly the inputs that determine whether a low priced, high volume product still makes money on each unit sold. ## What triggered the audit A frustrating pattern had emerged: the more the bestsellers sold, the flatter total profit looked. That only makes sense when your winners are quietly losing money on every sale, so the audit rebuilt unit economics for the top SKUs from the supplier invoice upward, rather than trusting the standard cost figures the pricing had been based on years earlier. ## What the audit found The rebuild exposed an uncomfortable truth about the very products the business was proudest of. Once current inbound freight, duties and packaging inflation were fully loaded into each unit, the retailer’s three top selling SKUs were priced below their true landed cost. Every additional unit sold, the thing the whole merchandising effort was optimized to do, actively destroyed margin. Because the original prices had been set against stale, lower cost assumptions and never refreshed, the erosion had crept in invisibly while volume kept rising and masking the damage in the blended numbers. The bestsellers had, in effect, become loss leaders nobody had chosen, costing roughly $59k a year in foregone margin across their combined volume. ◉ How we produced this finding The product pricing finding rests on a full unit economics rebuild. MarginFix stripped the ecommerce numbers back to true landed and delivered cost, exposed where margin actually leaked, and had a named senior auditor verify every figure against the client’s own records before presenting it. Data sources: Cost of goods, product pricing inputs, fulfillment, fees, returns and discounts, reconciled per unit and per order, so the true contribution margin behind every single sale is visible rather than assumed. Key frameworks: A full contribution margin and cost to serve rebuild, full cost ROAS and margin based ROI analysis, framed by the Enterprise Marketing ROI Framework that treats spend as a capital allocation decision. Human validation gate: Every number is rebuilt on your own cost data and signed off by a named senior auditor before it ships. No figure leaves the building without a human standing behind it. Verified against Ad platform exports Price / margin change log GA4 / analytics Shopify / order data Finance P&L The margin recovered / yr was measured like for like over a matched period, reconciled to invoiced margin in the P&L, and signed off by a named senior auditor before publication. Client identity redacted to protect their commercial position. WORKING PAPER ████████ Pet Representative Redacted Product Contribution margin Cat litter 10kg +11% Dog food 12kg +9% Bestseller 3 pack −2% margin recovered / yr +$58,940 Recurring, recovered every year the fix holds, not a one off. Working paper: contribution margin on the three bestsellers traced line by line and reconciled to invoiced margin in the P&L over a matched period. Line items representative and redacted; the recovered figure is the reconciled audit finding. ## What we changed ✓ Rebuilt unit economics on current landed cost, freight, duties and packaging included, and repriced the affected SKUs back to a healthy positive contribution. ✓ Staggered the increases and paired them with merchandising and bundling support, so volume held steady through the change rather than dropping sharply. ✓ Set a quarterly landed cost review, so pricing now tracks real freight and input costs instead of drifting on last year’s assumptions. ✓ Added landed cost alerts on the highest volume SKUs, so a future cost spike triggers a pricing review before it erodes margin unnoticed. ## The result The before and after margin is contribution after fulfillment, fees, returns and advertising. $59k a year recovered on the products that sell the most, an annual figure equal to 10× the $5,950 Audit + Sprint fee. For any founder proud of their bestsellers, the finding is a gut check: rising volume was hiding the fact that each unit lost money, because prices were set against costs that no longer existed. If you haven’t rebuilt landed cost since freight inflation hit, your winners may be your biggest losers, and every extra sale deepens the hole. A fixed fee audit rebuilds it from the invoice up in days, before another quarter of volume compounds the damage. From kickoff to signed off findings: 6 days. ![Portrait photograph of Victoria Miller](/assets/team/victoria-miller.jpg) Reviewed & signed off by: Victoria Miller Senior Auditor · MarginFix · 10+ years of auditing experience ✓ Anonymized to protect the client · senior reviewed findings · Audit completed between 2024 and 2026, contracted through Cristian Bragau's practice before the MarginFix name existed · Published in the MarginFix library July 21, 2026 · Last reviewed October 24, 2026 ## What the client said DTC / ECOMMERCE $59k a year found in 6 days Contribution margin on the three bestsellers: **−2% → +7%** “The more our bestsellers sold, the flatter profit looked. Victoria rebuilt landed cost from the supplier invoice up, and our three top SKUs were priced below cost after freight and packaging. We repriced in stages and volume held.” **Founder & CEO · Ecommerce · Pet** Written approval Under NDA 6 days to findings ![Portrait photograph of Victoria Miller](/assets/team/victoria-miller.jpg) **Victoria Miller** Senior Auditor · signed this audit off [Request an audit →](/book/) [Prefer to talk it through first? Talk to an auditor →](/book/call/) ## More DTC / Ecommerce findings [Subscription churn was masked by aggressive new trial spend, +$55k/yr](/cases/subscription-churn-was-masked-by-aggressive-new-trial-spend/) [Bundles were cannibalizing full price hero SKUs, +$38k/yr](/cases/bundles-were-cannibalising-full-price-hero-skus/) [FBA fees and returns had overtaken the margin on the hero ASINs, +$61k/yr](/cases/fba-fees-and-returns-had-overtaken-the-margin-on-the-hero-as/) [Affiliate commissions were being paid on sales the brand already owned, −$44k/yr](/cases/affiliate-commissions-were-being-paid-on-sales-the-brand-alr/) [Scaling spend was hiding a $134k annual margin leak, +$134k/yr](/cases/scaling-spend-was-hiding-a-134k-annual-margin-leak/) [A discount habit was training the best customers to wait, +$68k/yr](/cases/a-discount-habit-was-training-the-best-customers-to-wait/) [The benchmark: what audits recover across 74 cases →](/benchmark/) [All case studies](/case-studies/) [Model a DTC / Ecommerce budget in the wasted ad spend calculator →](/estimator/ecommerce/)