The parts nobody puts in the sales video

The difficulties that get skipped

Cash flow, not capital

People budget for inventory. Almost nobody budgets for the gap between paying a supplier and being paid by the marketplace. Your money goes out at the purchase order, comes back after the goods land, sell, clear the return window and reach a settlement period. If you spent everything on the first order, you cannot reorder your winner — which is the exact moment the business either compounds or stalls. Undercapitalisation is repeatedly cited as one of the most common reasons sellers fail, and it usually means this, not the initial budget.

The fee floor keeps rising and your price does not

US FBA fulfillment fees rose on 15 January 2026, and from that date selling price became an input to the fulfillment fee for the first time. That means a repricing decision can now move your fulfillment cost. If you are operating on a five to ten percent net margin, a fee change you did not model is the difference between a business and a hobby that costs money.

Cross-border stopped being cheap

The $800 de minimis exemption that made direct-from-overseas parcel shipping viable was suspended for China and Hong Kong in May 2025, extended to every country of origin that August, and written into regulation in June 2026. Every commercial import now needs a customs entry, a 10-digit tariff classification and duty payment, at one dollar of value as much as at $799. Any course teaching the old parcel model is teaching something that no longer exists.

Account suspension is a business risk, not an edge case

A single policy issue can freeze your inventory and your payouts simultaneously. You are building on land you do not own. This is survivable, but it should be in your risk model from the first week rather than discovered in the fourth month.

The work is boring

The actual job is reconciliation, listing hygiene, inbound planning, chasing discrepancies, and staring at spreadsheets. If the appeal for you is the lifestyle imagery rather than the operational work, that mismatch will surface — usually around the point where the first shipment goes missing and someone has to file the claim.

Why so many paid courses are a transfer, not a teaching

Not all of them. But the structural problem is worth naming plainly: the course business has better and more reliable margins than the selling business it teaches. Someone who can fill a webinar earns more, more predictably, than someone shipping units. That is not an accusation against any particular person — it is an incentive, and incentives shape what gets sold.

Five signals worth taking seriously

• No failure rate disclosed. If a programme has taught thousands of people, it knows how many stopped selling within a year. Refusing to publish that number is a decision, not an oversight.
• Income screenshots as evidence. Revenue is not profit. A screenshot of gross sales tells you nothing about what was left after cost of goods, fees, advertising, returns and freight.
• Artificial scarcity. Countdown timers and closing-doors language on a digital product with zero marginal cost exist for one reason.
• The upsell ladder. If the course leads to a mastermind, which leads to coaching, which leads to a done-for-you service, the product is the ladder.
• The teacher's current business is teaching. Ask when they last ran the operation they are describing. It is a fair question, and the answer is informative either way.

What is genuinely worth paying for

Software you would use anyway. A customs broker. An accountant who understands marketplace settlements. A specific consultation with someone who will look at your numbers rather than sell you a framework. Access to a real supplier network. These have a defined deliverable, which is exactly what generic courses lack.

What is free and better

Seller Central's own documentation covers fee schedules, policy requirements, reimbursement eligibility and shipment procedures in more detail than any course, and it is authoritative in a way no course can be. It is dull and badly organised, and that is the entire reason a market exists for someone to read it to you at a markup.

The honest version of the opportunity

This is not a case for giving up. Marketplace selling is a real business with real margins for people who treat it as operations rather than as a shortcut. The conditions in 2026 are arguably better than the noise suggests: reporting on Marketplace Pulse data indicates traffic per seller has risen since 2021 while new US seller registrations in 2025 were the lowest in a decade, and third-party sellers account for the majority of units sold.

What has gone is the version where thin margins, no reserve and no operational discipline still worked because fees were low and cross-border parcels were duty-free. That version is not coming back, and anyone still selling it should be treated accordingly.