--- title: "DTC / Ecommerce Marketing & Margin Audit | MarginFix" description: "DTC / Ecommerce marketing audit evidence: 10 published cases, $53k lower median annual highlight figure. Explore case outcomes and model limitations." url: https://marginfix.ai/industries/dtc-ecommerce/ lastmod: 2026-11-11 --- Industry · Marketing & margin audit # DTC / Ecommerce marketing audit: published findings and scope Separate acquisition from contribution after product costs, shipping, returns and discounts. A [blended ROAS](/glossary/blended-roas/) does not establish contribution profit. 10 published cases $590k sum of annual case figures $53k lower median case figure / yr 6 days lower median time to findings The 10 published DTC / Ecommerce case highlights sum to $590k in annual figures, with a lower median of $53k. Each case explains its own outcome; the sum does not establish realized cash recovery. ## What the DTC / Ecommerce figures mean 10 published DTC / Ecommerce cases: **$53,000 lower median annual highlight figure**. The [estimator](/estimator/ecommerce/) uses a separate $54k model reference. Equal figures in some sectors do not make these the same statistic. The population is the 74 published case studies, with one selected highlight figure per case. It is not a representative sample of all SMBs or a total of every finding in each audit. A lower median is the middle value after sorting, using the lower of the two middle values for an even count. Published annual figures include different outcome types; they are not all collected cash, profit or recurring savings. Case publication dates do not establish common observation, implementation or recovery periods; use each case for its supported timing and outcome. Separate acquisition from contribution after product costs, shipping, returns and discounts. A blended ROAS does not establish contribution profit. ## Where DTC / Ecommerce budgets leak The 10 published DTC and ecommerce audits found most of their money where a ROAS dashboard cannot see it. Paid media carries the largest share: 4 cases worth $262k a year in case figures, led by two prospecting campaigns that were buying revenue below break even once shipping and returns were counted ($134k a year, found in 6 days). The others in that group are a campaign credited with sales it did not drive, retargeting paid twice across two platforms, and affiliate links paid on organic and branded purchases that needed no incentive. Unit economics comes next, with 3 cases from $47k to $61k a year: a free shipping threshold set years ago, freight and packaging costs that never reached the price, and marketplace fees and returns that pushed the hero products below contribution. Promotions add 2 more, where always on codes and a bundle pulled buyers off full price items. The thread through all 10 is the measure. Revenue and [blended ROAS](/glossary/blended-roas/) reward volume; contribution after product cost, shipping, returns and discounts shows which sales pay. That is where every DTC audit starts, and the five checks further down are the first ones we run. Four patterns across the 10 published DTC / Ecommerce cases. Each card names the cases it rests on; open one for its evidence. The five patterns behind them are defined in [the margin leak guide](/margin-leaks/). Paid media ### Blended ROAS hiding the losers Winning campaigns subsidize losing ones, and platforms claim sales they did not drive. Split by [contribution margin](/glossary/contribution-margin/) and checked for [incrementality](/glossary/incrementality/), the blended number stops hiding the campaigns that lose money. 4 of the 10 published cases · $31k to $134k a year - [Scaling prospecting spend was losing money on every sale](/cases/scaling-spend-was-hiding-a-134k-annual-margin-leak/), +$134k a year - [The agency’s ‘winning’ campaign was the biggest loser](/cases/the-agency-s-winning-campaign-was-the-biggest-loser/), −$53k a year - [Retargeting was paid twice for the same customer](/cases/retargeting-was-paid-twice-for-the-same-customer/), −$31k a year - [Affiliate commissions were being paid on sales the brand already owned](/cases/affiliate-commissions-were-being-paid-on-sales-the-brand-alr/), −$44k a year Unit economics ### Shipping, fees and landed cost Free shipping thresholds, freight, packaging and marketplace fees drift while prices stay put, so the best sellers slip below true contribution. 3 of the 10 published cases · $47k to $61k a year - [Free shipping was quietly deleting the margin on every third order](/cases/free-shipping-was-quietly-deleting-the-margin-on-every-third/), +$47k a year - [Bestsellers were priced below their true landed cost](/cases/bestsellers-were-priced-below-their-true-landed-cost/), +$59k a year - [FBA fees and returns had overtaken the margin on the hero ASINs](/cases/fba-fees-and-returns-had-overtaken-the-margin-on-the-hero-as/), +$61k a year Pricing and promotions ### Discounts that train buyers to wait Always on promo codes and bundles pull buyers off full price items and teach the best customers to wait for the next offer. 2 of the 10 published cases · $38k to $68k a year - [A discount habit was training the best customers to wait](/cases/a-discount-habit-was-training-the-best-customers-to-wait/), +$68k a year - [Bundles were cannibalizing full price hero SKUs](/cases/bundles-were-cannibalising-full-price-hero-skus/), +$38k a year Retention ### Churn hidden behind new trial spend Aggressive trial acquisition can keep sign ups growing while net revenue retention sits below 100% once the incentives stop. 1 of the 10 published cases · $55k a year - [Subscription churn was masked by aggressive new trial spend](/cases/subscription-churn-was-masked-by-aggressive-new-trial-spend/), +$55k a year The largest published DTC / Ecommerce finding $134,000 a year, found in 6 days Scaling prospecting spend was losing money on every sale. Two prospecting campaigns were buying revenue below break even after shipping and returns. Contribution margin on the two top campaigns, before**−7%** After the fix**+9%** [Read the case →](/cases/scaling-spend-was-hiding-a-134k-annual-margin-leak/) ## The 10 DTC / Ecommerce audits [Scaling prospecting spend was losing money on every sale DTC · Beauty & personal care · +$134k/yr · 6 days Two prospecting campaigns were buying revenue below break even after shipping and returns.](/cases/scaling-spend-was-hiding-a-134k-annual-margin-leak/) [A discount habit was training the best customers to wait D2C · Food & beverage · +$68k/yr · 6 days Always on promo codes eroded full price demand; a tiered structure protected margin.](/cases/a-discount-habit-was-training-the-best-customers-to-wait/) [FBA fees and returns had overtaken the margin on the hero ASINs Ecommerce · Amazon seller · +$61k/yr · 6 days Marketplace fee creep and a rising return rate pushed the bestselling ASINs below true contribution.](/cases/fba-fees-and-returns-had-overtaken-the-margin-on-the-hero-as/) [Bestsellers were priced below their true landed cost Ecommerce · Pet · +$59k/yr · 6 days Freight and packaging inflation had never been passed into unit economics.](/cases/bestsellers-were-priced-below-their-true-landed-cost/) [Subscription churn was masked by aggressive new trial spend DTC · Supplements · +$55k/yr · 7 days Net revenue retention fell below 100% once trial incentives were removed.](/cases/subscription-churn-was-masked-by-aggressive-new-trial-spend/) [The agency’s ‘winning’ campaign was the biggest loser Ecommerce · Home & living · −$53k/yr · 7 days Attribution credited a campaign for sales it didn’t drive; budget reset to incremental channels.](/cases/the-agency-s-winning-campaign-was-the-biggest-loser/) [Free shipping was quietly deleting the margin on every third order DTC · Apparel · +$47k/yr · 5 days A threshold set years ago no longer matched basket economics or carrier rates.](/cases/free-shipping-was-quietly-deleting-the-margin-on-every-third/) [Affiliate commissions were being paid on sales the brand already owned DTC · Footwear · −$44k/yr · 5 days Influencer and affiliate links claimed organic and branded purchases that needed no incentive.](/cases/affiliate-commissions-were-being-paid-on-sales-the-brand-alr/) [Bundles were cannibalizing full price hero SKUs Ecommerce · Beauty · +$38k/yr · 5 days A promo bundle sold well but pulled buyers off higher margin singles.](/cases/bundles-were-cannibalising-full-price-hero-skus/) [Retargeting was paid twice for the same customer DTC · Beauty · −$31k/yr · 5 days Overlapping audiences double counted conversions across two platforms.](/cases/retargeting-was-paid-twice-for-the-same-customer/) ## What the audit checks for DTC / Ecommerce - Campaign profitability by SKU margin, not [blended ROAS](/glossary/blended-roas/) - Feed quality, search term bleed and negative keyword coverage - Checkout funnel and shipping threshold economics - Email and SMS flow coverage against a best practice map - Attribution double counting across Meta, Google and GA4 Running paid search or paid social? Each has its own self scored checklist: the [Google Ads audit checklist](/google-ads-audit-checklist/) and the [Meta ads audit checklist](/meta-ads-audit-checklist/). ## The five leak patterns every DTC / Ecommerce audit tests Every DTC / Ecommerce audit tests the same five patterns that drain SMB marketing margin. The [2026 benchmark](/benchmark/) shows how often each one turns up across industries. - Non incremental paid - Attribution inflation - Mispriced offers - Retention leaks - Discount habits ## Industries we audit besides DTC / Ecommerce [Fintech](/industries/fintech/) [Marketplace](/industries/marketplace/) [Pharma](/industries/pharma/) [Manufacturing](/industries/manufacturing/) [Retail](/industries/retail/) [B2B SaaS](/industries/b2b-saas/) [Subscription](/industries/subscription/) [Services](/industries/services/) [Book a DTC / Ecommerce audit →](/book/?ind=dtc-ecommerce) [Estimate your DTC / Ecommerce leak →](/estimator/ecommerce/) [See the benchmark](/benchmark/)