E-commerce · Amazon FBA · DTC brands

Buying an E-commerce Brand? Check What the Ads, Returns and Inventory Do to the Profit.

Before you buy an e-commerce brand, put the profit back in the right months: ad spend against the sales it bought, returns against the sales they reverse, inventory at what it's really worth, and platform fees as the platform actually charged them. Then test the owner's add-backs against the paper.

E-commerce profit is a thin layer between large numbers: revenue on one side, and ads, fees, freight, returns and cost of goods on the other. A small shift in any of them, or in which month it lands, moves the earnings a lot. Here's where the claims run ahead of the records, what to ask, and what a TrueQoE First Pass checks.

Get your Self-Service First Pass →Use the e-commerce due diligence checklist →

By Mark Hirsch, Founder, TrueQoE · Managing Member, Strategic Lever LLC — buyer, seller, operator, and advisor across lower-middle-market transactions.

What earnings claim does an e-commerce listing usually make?

Short answer: SDE or adjusted EBITDA for the trailing twelve months, presented as a brand with loyal customers and room to scale ads. The add-backs usually cover the owner's pay, personal expenses, and a freight spike or product launch called one-time. Behind the figure sit assumptions the listing rarely states: that ad spend in the period was normal, inventory is valued right, and returns and fees are all in.

The trailing twelve months is a window, and windows can be chosen. Ads cut back in the last quarter, a large inventory purchase paid for the year before, refunds that post after the window closes: each can make the same business look more profitable than it runs.

None of that requires bad faith. Platform payouts net fees, refunds and reserves together, and a bookkeeper recording deposits can miss what was netted. The result is still a profit figure you'd be paying a multiple of.

How an e-commerce SDE figure is typically assembled
  1. Reported profitReported
  2. Owner's salaryDocumented
  3. Personal subscriptions and travelDocumented
  4. "One-time" freight spikeNeeds support
  5. Ad spend called "brand building"Undocumented
  6. Claimed SDE

Illustration. Step lengths are not data from any business.

Which e-commerce add-backs and revenue patterns most often don't hold up?

Short answer: Six. Sales that depend on ad spend the period didn't fully carry. Revenue concentrated on one platform. Inventory valued too high. Returns and refunds in the wrong period. Fulfillment costs called one-time. And cash timing that moves profit between years.

Ad spend dependence

If paid ads drive the sales, ad spend is a cost of revenue, not a choice. Sellers sometimes cut ads before a sale, which lifts profit for a few months while the revenue it would have bought tails off later. Others add back part of ad spend as “brand building.” Look at ad spend and revenue side by side, month by month, across the whole period.

Platform concentration

A brand that sells mostly through one marketplace, or gets its traffic from one ad platform, has a landlord. The platform sets fees and policies, can suspend listings or accounts, and decides how ownership changes are handled. That risk doesn't appear on the P&L, but it travels with the business.

Inventory valuation

Cost of goods sold is calculated from inventory, so inventory is where profit can be made or lost on paper. Ending stock counted high, or slow-moving and damaged units carried at full cost, means a lower cost of goods and a higher profit.

Inventory is also usually a separate line in the deal. Know how it was counted, where it sits (your warehouse, a 3PL, a marketplace's), and how much of it actually sells.

Returns and refunds

Returns arrive after the sale and are often netted out of a platform payout rather than recorded on their own. A P&L built from deposits can show gross sales from one period and the refunds from the next, or not show them at all. Return rates by product matter too: a top seller with heavy returns is less of a top seller.

Fulfillment costs

Shipping, freight, warehousing, third-party logistics and marketplace fulfillment fees change often, and sellers often add back a spike as one-time. Freight costs that came down may go back up. A storage fee charged because inventory sat too long is a signal about the inventory, not a one-off.

Cash vs. accrual timing

A smaller e-commerce business may keep cash-basis books. Inventory bought and paid for in one year and sold in the next, ad spend on a card paid the following month, and payouts that lag the sale all move profit between periods. Ask which method the books use, and have the timing looked at before you rely on any single year.

What should you ask an e-commerce seller before the LOI?

Short answer: Ask for monthly revenue, ad spend, returns and fees side by side, the sales split by platform, how inventory is counted and valued, and the paper behind every add-back. Ask for the platform reports, not just the P&L.

  1. Can you show revenue, ad spend, returns and refunds, and platform fees by month for every year the price relies on?Annual totals hide the timing. Monthly results show it.
  2. How do sales split by platform, marketplace and channel?
  3. Can you share the platform payout and settlement reports, and reconcile them to the P&L?Payouts net fees, refunds and reserves together; the reconciliation shows what was netted.
  4. How is inventory counted and valued, where does it sit, and how much is slow-moving or damaged?
  5. Did ad spend change in the months before the sale, and why?
  6. Are the books kept on a cash or accrual basis, and when was the largest inventory purchase paid for?
  7. Have any listings, accounts or ad accounts been suspended or warned, and can they transfer to a new owner?The transfer question is for the platform's terms and your attorney.
  8. For each add-back, what document supports it?A freight invoice and the quarter around it, a receipt, a payroll record. "It won't happen again" is a claim.

The full request list is in the e-commerce due diligence checklist.

Where does a TrueQoE First Pass help on an e-commerce deal?

Short answer: On the earnings tie-out and the owner add-backs. A First Pass ties each year of the seller's P&L to that year's stated totals, labels each owner add-back Documented, Needs support or Undocumented, and lists the records missing from the package. Platform and inventory checks are guidance, and so are ad-spend and returns analysis.

The platform reports, the inventory and the ad accounts need someone with access and time. A First Pass works from the financials the seller already sent, and tells you which parts of the earnings claim already stand on paper before you ask for logins.

What a First Pass reports

  • Each year of the P&L tied to that year's own stated totals, with any gap shown.
  • Each owner add-back, such as personal expenses or a "one-time" freight cost, labelled by its evidence and pinned to its source line.
  • A list of records missing from the package.

Guidance for you and your advisors, not a First Pass output

  • Ad spend dependence and advertising performance.
  • Platform and channel concentration, account health and transferability.
  • Inventory counts, valuation and aging.
  • Returns, refunds and payout reconciliation.
  • Fulfillment and freight cost trends.
  • Cash vs. accrual timing across periods.

Every adjustment in the report lands in one of three states:

Documented
the adjustment traces to source records.
Needs support
the adjustment is plausible, but the evidence isn't in the file yet.
Undocumented
there is nothing behind it.

What a First Pass is not. It works from the documents you upload and does not verify that seller-prepared records are authentic. It is not an audit, review, compilation, valuation, legal or tax opinion, or a Quality of Earnings report, and it does not satisfy a lender's Quality of Earnings requirement. It does not check returns with the IRS or test bank deposits.

Frequently asked questions

How is an e-commerce or Amazon FBA business valued?

Usually as a multiple of SDE or adjusted EBITDA, shaped by how dependent the business is on one platform and on paid traffic, the strength of the brand, and the trend. Inventory is often handled separately from the earnings multiple, so read how the LOI treats it. Before any of that, test the earnings figure itself: it is the number most likely to move once ads, returns, fees and inventory are put in the right periods.

How can inventory change an e-commerce business's profit?

Cost of goods sold depends on what inventory was on hand at the start and end of each period and what it was valued at. Overstate the ending inventory, or leave slow-moving and damaged stock at full cost, and profit goes up on paper. On cash-basis books, buying a large order in one year and selling it in the next moves profit between years. Ask how inventory is counted and valued, and have your CPA test it.

How do ad spend and returns affect e-commerce earnings?

Paid advertising often drives the sales, so cutting it before a sale can lift profit for a period while quietly shrinking the revenue that follows. Returns and refunds can land in a later period than the sale, or be netted out of platform payouts where they're easy to miss. Look at both month by month alongside revenue, not as annual totals.

What is platform concentration, and why does it matter when buying an e-commerce business?

It is how much of the revenue depends on one marketplace or channel, such as a single marketplace account, one storefront platform or one ad platform. The platform sets the fees, the rules and whether an account stays active, and it can change any of them. A buyer inherits that dependence, and whether an account and its listings move to a new owner is a question to settle with the platform's terms and your attorney.

Does a TrueQoE First Pass analyze platform or inventory data?

No. A First Pass ties each year of the seller's financials to its stated totals, labels each owner add-back Documented, Needs support or Undocumented, and lists missing records. Platform reports, inventory counts and valuation, advertising performance and returns analysis are guidance for you and your advisors, not First Pass outputs. A First Pass is not a Quality of Earnings report.

Looking at an e-commerce brand?

Find out what the seller's own numbers support before you ask for the platform logins. Before the LOI. Before the clock.

Get your Self-Service First Pass →See an annotated sample report →

Upload the P&Ls, tax returns and balance sheets the seller gave you. The report ties each year to its own stated totals, labels every adjustment by its evidence, and lists the records still missing.