A wholesale unit price is the beginning of a profit calculation. To decide whether to buy, connect it to a selling-price assumption and to the costs of your actual fulfilment route. Keep known amounts separate from estimates and missing quotes. This guide uses one real anonymised US toy catalogue observation, read on 17 September 2026, to show the arithmetic. It is a dated example, not a live offer, a guaranteed selling price or a promise of return. The method matters more than the particular product: preserve the basis of each number so you can update the calculation when the price, quantity or route changes.
What is landed cost in this calculation?
For a buying worksheet, define landed inventory cost as the product purchase price plus the applicable costs needed to get a saleable unit to your chosen receiving point. Depending on the agreed route, those may include freight, duties, handling, prep and labels. Write the destination next to the total, because reaching your warehouse is different from reaching the final fulfilment network. This definition is a practical buying convention rather than tax or accounting advice. Use the actual quote and professional advice where a particular charge or tax needs formal treatment.
Which costs belong before sale and which occur when it sells?
Separate acquisition and inbound costs from charges associated with the sale or ongoing storage. This makes it easier to see both the cash needed to buy the batch and the estimated contribution when a unit sells. Avoid mixing a shipment-wide charge with a per-unit charge without showing the allocation. Keep your selling plan, storage, returns and other operating expenses visible rather than treating a product-level estimate as the final profit of the whole business. If a charge is already included in another figure, record that to prevent counting it twice.
What does the real catalogue observation contain?
The anonymised US toy row showed a wholesale unit price of $47.19, a reference selling price of $65.90, an FBA fee estimate of $5.03, a referral fee estimate of $9.89 and prep of $0.30. Its closing-fee field was $0.00. These are observed catalogue fields, not invented order assumptions. The same row also showed a current Buy Box price of $59.00, so the reference price must not be presented as the price currently available. No delivery, duty or other order-specific quote was established by this observation.
How much remains at the reference selling price?
Using those reference-case fields, the arithmetic is $65.90 minus $47.19 product cost, minus $5.03 FBA, minus $9.89 referral, minus $0.30 prep. That leaves $3.49 per unit before any costs outside those fields. The closing-fee field contributes zero in this particular observation; that does not mean every product has no closing fee. Call the result a reference-case contribution before unquoted costs, rather than a complete landed profit. It is a narrow amount of room, which makes obtaining the remaining costs particularly important before considering an order.
Why does the current selling price change the decision?
The observed current Buy Box was lower than the reference price. At $59.00, subtracting the $47.19 product cost leaves $11.81 before fees and prep, rather than $18.71 at the reference price. Recalculate the selling fees for the current price and the exact product using Amazon’s tools; do not silently combine a different sale price with a fee estimate calculated on another basis. A historical or reference-price opportunity is something to investigate. It is not proof that you can immediately sell at that price or achieve the reference-case contribution.
How should I interpret a percentage return?
State the denominator whenever you show ROI. Dividing the reference-case $3.49 by the observed $47.19 product cost gives approximately 7.40%, before the missing costs. That is return on product cost for this limited example. It is not the same as return on fully landed inventory cost, because additional acquisition costs would change both the profit numerator and the investment denominator. Margin is different again: it compares contribution with selling revenue. A percentage without its price basis, cost coverage and denominator is easy to misread when comparing products.
How do I allocate a shipment quote without inventing precision?
Use the quote for the proposed order and a method that reflects how the charge arises. Weight, volume, cartons or units may be appropriate in different circumstances. Record the method and keep the shipment total reconciled to the amount allocated across lines. An equal amount per unit can be misleading when a mixed shipment contains very different products. If the quote is not available, leave the calculation incomplete and identify the missing input. A blank field should not quietly become a zero just to make the spreadsheet produce a positive result.
What happens if prep or labels are included elsewhere?
Follow the agreed commercial quote. If the supplier’s price or your fulfilment partner’s charge already includes a service, do not subtract the same service again under another label. Equally, a catalogue field does not prove the service has been ordered or applies to your route. In this example the $0.30 prep field is included only to reproduce the observed reference-case calculation. Your actual order needs its own confirmed service scope. Keep an inclusion note against each amount so a colleague can understand the calculation without reconstructing your conversation with the supplier.
How does time in inventory affect the buying decision?
Unit contribution does not tell you when the cash returns. Consider the time between payment, shipment, receiving and sale, and the charges that may depend on storage or other events. Use the demand evidence to assess the opportunity, while keeping total listing sales separate from your likely share. A line with a modest unit return may still deserve attention under one replenishment plan and be unsuitable under another. Avoid turning an estimated monthly-sales figure into a guaranteed sell-through date. Track actual performance and use it to improve the next purchase decision.
What should the final buying worksheet show?
Keep the product identity, marketplace, currency, observation date, proposed quantity, selling-price basis, itemised costs and unresolved inputs together. Include a clear reference case and any alternative case you actually checked. Athena's product data is useful for finding and comparing opportunities, while the order-specific quote completes the costs for your route. This example deliberately leaves unquoted costs unresolved rather than publishing a made-up all-in return. Before buying, replace its dated observations with the current product and fee information, obtain the remaining quotes, and decide whether the resulting room meets your needs.
What Athena shows you: which figures help you decide?
The catalogue brings together trade price, Amazon Buy Box context, estimated fees, sales rank, estimated monthly sales and 90-day ROI where data is available. Inspect the source and basis of the figures on the product rather than treating them as a promise. Your final decision still needs the current account-specific checks and the costs of your chosen delivery and fulfilment arrangement.
Where can I check the next step?
Use the public catalogue demo to understand the buying information, then read our wholesale supplier overview and invoice and approval guide. The per-product ROI guide explains the figures in more detail. Ask the sales team about the exact products, destination and documents you need before making a purchase decision.
For our current commercial terms, read Terms of Trade and Shipping & Returns. The About page and contact page identify the business and support routes.
For the platform's own guidance, see Amazon's wholesale sourcing guide, Amazon's fee-estimation tools and the requirements displayed in your own Seller Central account. Those sources and the current order confirmation should take precedence over an older saved article.