Sellerboard vs Inventory Lab: one is still sold on its own, and one is not

Start with the thing that has changed, because most comparisons predate it

Nearly every head-to-head you will find on this pair prices two independent subscriptions against each other. That framing has expired. Enter the obvious Inventory Lab pricing URL today and you are forwarded to Threecolts, where the product is presented as one component of Seller 365 and the page states it directly: it is included in every plan.

So you are not choosing between two products of similar shape. You are choosing between a focused, independently priced tool and a bundle of ten in which the tool you came for is one line item. That is a legitimate and often good-value way to sell software — but it changes the question from "which product is better" to "do I want the other nine".

It also means you should discard every standalone monthly figure for Inventory Lab still in circulation. Those numbers were correct once and now describe a subscription that cannot be purchased. This keeps happening across the Amazon software market: strong point tools get acquired, folded into suites and lose their price pages, while the articles about them stay online for years. It is nobody's fault. It is just how search results decay relative to product catalogues.

Sellerboard, by contrast, is exactly what it was — one product, four tiers, its own pricing page, no bundle around it.

The prices, side by side, with the billing tab named

Read from each vendor's own page on 20 August 2026, in US dollars.

Sellerboard, billed monthly: Standard $19, Professional $29, Business $39, Enterprise $79. Billed for a year: $179, $279, $369 and $759. The trial is a full month and takes no card.

Seller 365, billed monthly: Standard $69 for one user, Teams $129 for up to ten, Pro $199 for up to ten. The trial is 14 days, granted in two halves — seven on signup and seven more once a seller account is connected. An annual option sits behind a toggle; we read the annual view presented differently on two of the vendor's own pages the same day, so rather than pick the figure that suited us we are printing only the monthly-billed numbers and pointing you at the live switch. Check which billing tab you are reading, on any vendor including us — that habit prevents more bad budgets than any comparison table.

Set against each other on sticker alone, the entry tiers are $19 and $69. But that comparison is close to meaningless, because one figure buys a single job done deeply and the other buys ten jobs done adequately-to-well. The correct exercise is to list what you currently pay for elsewhere — scanning app, repricer, feedback tool, accounting connector — and subtract those from the bundle price before comparing anything.

They disagree about when a cost becomes real, and that is the actual difference

Here is the distinction that matters and that feature grids never show. These two products capture cost at opposite ends of the timeline.

Inventory Lab captures cost at the buy. Its centre of gravity is the moment you decide to purchase a unit: you scan or research it, Amazon's fees come off before you commit, the margin is visible while the decision is still reversible, and the shipment you build carries that cost through to the listing. For a seller whose business is buying — arbitrage, wholesale, liquidation, closeouts — this is the correct place to put the intelligence, because the decision that makes or loses the money happens in a warehouse aisle or on a supplier call, not in a monthly report.

Sellerboard captures cost at settlement. Its centre of gravity is the reconciliation: every fee Amazon actually charged, every return, every promotion, every advertising dollar, matched against cost of goods held by batch so that historical margin is calculated on historical costs. For a brand that manufactures or imports, where landed cost moves with freight and duty and the buying decision was made months ago, this is where the truth lives.

Which explains why the fight over these two products is usually a proxy for a different question: what kind of seller are you? If your margin is decided at the point of purchase, buy the tool that lives there. If your margin is decided by fee drift, returns and advertising after the goods are already yours, buy the tool that lives there. Brands that do both — and many do — usually end up running both, and at these prices that is a defensible answer rather than a cop-out.

Seats, orders and the limits that quietly pick your tier

Both products band you, and they band you on different things. Getting this wrong is how people end up on a plan that fits their revenue and not their operation.

Sellerboard's ladder is built on monthly order count: 3,000, 6,000, 15,000 and 50,000 across the four tiers, alongside connected seller accounts — 4, 6, 8 and 16 — and user seats, which run 1, 2, 4 and 4. Two consequences follow. A low-price, high-frequency catalogue climbs that ladder much faster than a high-ticket one on several times the revenue, and bundling into multipacks moves you down it, because a customer buying a three-pack is a single order. The seat ceiling of four also arrives before the order band does for some teams.

Seller 365's ladder is built on seats and commission rate: one user on the entry tier, up to ten above it, with the recovery commission changing at the top. The tool access does not change as you climb, which is a straightforward and honest way to structure a price list.

The five-minute exercise is the same either way. Pull your highest order month from the last quarter rather than the average, count the marketplace accounts you will connect, and count the people who need their own login. Those three numbers, not your revenue, decide what you pay.

The commission line, and the credit it deserves

There is a second price on one side of this comparison that most articles skip entirely. Each Seller 365 tier carries a reimbursement commission — 15% on the lower two plans and 5% on the top one — which tells you a filing service comes with the subscription at that rate.

That is worth acknowledging properly. Contingency recovery in this market is normally charged well above 5%, with a quarter of recovered funds being a common published rate and no subscription attached. A 5% contingency inside a $199 monthly plan is a genuinely sharp piece of pricing, and printing it on the plan comparison rather than burying it in terms is better behaviour than the category average.

Sellerboard has no such line, and that is not a criticism either — it does not claim to file. Its own description is that it finds FBA errors so you can request the money back through Seller Support, which is the accurate boundary of an analytics product and a more honest sentence than several competitors manage.

What that means practically: on the Sellerboard side, recovery is free to identify and costs you staff hours to pursue. On the bundle side, recovery costs you a percentage and costs you nothing in hours. Which is cheaper depends entirely on what an hour of your operations person is worth and how much you actually recover in a year. Run it with your own numbers rather than assuming the percentage is the expensive option — for most brands with a backlog, it is not.

What neither of them closes

Both products end at the same place. They make the money visible. Somebody still has to go and get it, and Amazon has recently made that harder in a way neither pricing page mentions.

Its updated FBA inventory reimbursement policy took effect on 31 March 2025 and moved valuation towards the manufacturing or sourcing cost of an item rather than its selling price, with sellers given a portal to submit cost documentation ahead of the change. Two things follow. Recoveries are worth less than the old arithmetic suggested, so a percentage-of-recovery deal is cheaper in absolute terms than it used to be. And the accuracy of your cost data now partly determines the size of every future reimbursement — which turns per-batch cost tracking from an accounting nicety into a recovery input. Both products on this page are good at cost tracking, from different ends. That is now worth more than it was.

The rest of the queue is unchanged and unowned by either tool:

• Amazon's FBA page states that units held in a fulfilment centre beyond 181 days attract an aged-inventory surcharge, charged monthly on top of ordinary storage. Both tools can show you a SKU at day 172; neither will decide whether it is removed, liquidated, discounted or absorbed, and the assessment arrives on schedule regardless.
• Fulfilment is billed against the dimensions Amazon has recorded. When those are wrong, the overcharge repeats on every unit until a remeasure is requested and pushed through.
• Inbound shipments that reconcile short are a claim only once somebody files one, inside a window counted in days.
• A restock alert is not a purchase order placed against a lead time with cash that is currently sitting in stock that is not selling.

Where we fit, and the redirect we would rather give you

Dr. Stock does not fulfil orders. It is not a system of record and it is not an ERP. It is that queue, run as a product — Fable 5 on Amazon inventory and supply chain, with human operators supervising at whichever autonomy level you pick, and buying decisions always returning to a person.

Those operators come from Full Circle, a full-service Amazon management company with $500M+ in managed revenue across 100+ brands. We publish no price: a demo, the first 30 days free, and a number agreed on the call against your catalogue and how much of the queue you want us holding. Both products on this page publish more about their pricing than we do, and pretending otherwise on a page about transparency would be silly.

Orbit is included at no extra cost — inventory, finance, ASIN-level profitability and the fee, price, BSR and buy box trackers. That is the part of our offer that competes with the software here, and if the software is genuinely all you need, buy the cheaper of the two above and get on with it.

The redirect: neither of these tools, and not us either, will fix a margin problem whose real cause is advertising spend landing on search terms that never convert. If that is what is happening, the repair is in the ad account and Dr. PPC is the product built for it.