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Red flags when buying an e-commerce or Amazon FBA business

An Amazon or e-commerce listing can show a handsome trailing twelve months while the last quarter is already down, the account is one policy strike from trouble, and the inventory is aged in a warehouse you do not control. The store is only as healthy as the channel.

Common seller tricks in e-commerce or Amazon FBA

Sellers often sell the trailing twelve months, not the run rate, and treat a brand and a set of reviews as more durable than Amazon’s rules allow.

Which numbers to verify

Ask for monthly sales, ads, fees, returns, and net, for at least 24 months, plus a last-90-days cut. Reconcile payouts to the bank. Split channels (Amazon, Shopify, wholesale). Inventory should be aged, with FBA fees and long-term storage in view. Recast any owner-operator time in customer service and ads. If one ASIN is most of the profit, model it disappearing.

Licensing and key-person risk

There may be trademarks, brand-registry status, and supplier agreements. Amazon and other marketplaces have their own terms; account standing is not a license you fully control. Confirm who owns the brand, the domain, the seller account, and the creative, and whether a change of ownership is even allowed without a formal process.

Equipment and condition

The ‘plant’ is inventory, packaging, and software (and sometimes a 3PL). Count inventory at a realistic net realizable value, not at a hopeful cost. FBA inventory you cannot inspect easily still has to be believed with reports, not photos. Ad accounts and email lists should be in the company’s name.

Seasonality and the calendar

Prime Day, holidays, and Q4 can be the year. A trailing twelve months that includes one outsized holiday and a weak recent quarter is a trap. Use a full two years if you can, and a current run rate, not just the best twelve months.

Customer concentration

SKU concentration, supplier concentration, and channel concentration (Amazon only) are the usual three. A single supplier in one country is a disruption risk. A single marketplace is a policy risk. Both should be in the model, not just in a risk appendix.

Questions to ask before you make an offer

  1. Please provide monthly sales, ads, fees, returns, and net for 24 months, plus a last-90-days view, reconciled to payouts.
  2. May I review account-health, IP, and review history, including any warnings or suspensions?
  3. What is the inventory age, including FBA stranded or long-term storage, and how was it valued?
  4. What share of profit sits in the top ASINs or SKUs, and in a single supplier?
  5. Who owns the brand, trademarks, domain, seller account, and creative, and what is the transfer process?
  6. What happened to ad spend and promotions in the months before the listing went live?
  7. How concentrated is the business in one marketplace versus owned channels?
  8. What customer-service load does the owner still handle?
  9. Are there unpaid ad bills, chargebacks, or supplier deposits at risk?
  10. After an LOI, may I speak with your accountant and get read-only access to the channel reports?

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Disclaimer. Deal Check is not financial, legal, or accounting advice. These pages and calculators are educational planning tools and can miss context. Verify every number with a CPA and a business broker, and do your own due diligence before making an offer.