The products outside your top 10: where the hidden Amazon profit is

Most Amazon catalogues follow the same shape. A few products carry the business and the rest sit in a long line behind them, selling a little, costing a little, and getting almost no attention. That shape is normal. What is not normal is knowing, product by product, whether the products behind the best-sellers make or lose money.

The usual advice treats those products as “dead stock” to clear before storage fees bite. That is half the story. Some of them hold profit you can win back with a small fix. Some are worth more sold alongside a best-seller. Some should go. And some are fine exactly as they are. The skill is telling which is which, using profit per product rather than sales.

Rank by profit, not by sales

Sales rank tells you which products are busy, not which ones make money. A steady seller can lose money once fees, ads and storage are counted, while a product selling twelve a month with no ads quietly profits on every one.

Amazon now gives you most of the sum. Profit analytics in Seller Central “combines sales, returns, fees, ads and seller provided cost data to help you analyse profitability at the SKU, ASIN and parent-ASIN level"¹. Amazon says it “automatically includes all selling fees, referral fees, fulfilment fees and storage fees”, including the aged inventory surcharge, removal, disposal and liquidation fees, and Sponsored Products charges¹. Its net proceeds figures “are dependent on seller provided inputs, such as inbound shipping and cost of goods sold”, and it leaves out your subscription fee¹.

Amazon says Profit analytics covers “all active listings” and offers “pre-computed time period options”; “for custom time periods” it points you to the SKU Economics report¹. So add your cost of goods, use the longest period Profit analytics offers, or SKU Economics for a custom 12 months so seasonal products get a fair hearing, and sort by profit. A product you have already closed won’t appear among active listings, so check those separately. Our guide to profit per product on Amazon covers the sum in detail, and the Profit X-Ray does it for a whole account.

Then set your top 10 by profit to one side. Everything else is the tail.

What a slow product really costs in the UK

Three UK fees matter, all on Amazon’s UK help pages.

• Monthly storage. Charged “based on calendar month and your daily average volume"². For most standard-size products it is £0.76 per cubic foot a month from January to September and £1.51 from October to December². Slow stock now costs about twice what it did in September.
• The aged inventory surcharge. Stock held “for 241 days or more” pays a monthly surcharge assessed on the 15th³. In the UK it starts at £1.18 per cubic foot at 241–270 days, rises to £3.14–£3.41 up to a year, and reaches £6.14 per cubic foot or £0.25 a unit, whichever is greater, after 455 days. Amazon says it is “in addition to the monthly storage fee"³, and it is not refunded if the item sells shortly afterwards³.
• The storage utilisation surcharge. Amazon works out a ratio for each size tier: your average daily stored volume divided by your average daily shipped volume over 13 weeks, in weeks². If you have a Professional account, first shipped to FBA more than 365 days ago, hold at least 0.71 cubic metres in that tier and the ratio is above 22 weeks, the surcharge is “applied to all inventory in fulfilment centres aged above 30 days"². Amazon’s rate table shows no surcharge for “sellers with less than 25 cubic feet of daily volume”, new sellers or Individual accounts².

That last rule is why the tail matters to your best-sellers. The ratio is per size tier, not per product. A shelf of slow products adds stored volume without adding much shipped volume, which pushes the whole tier’s ratio up. Cross 22 weeks and your best-sellers’ stock older than 30 days pays the surcharge too. Amazon’s Monthly Storage Fee report shows which SKUs “historically drive your storage costs"², and the FBA dashboard shows your ratio. Our Amazon FBA fees guide has the full rate card.

Four decisions: fix, bundle, drop or leave

Every product in the tail gets exactly one of four decisions. Four yes-or-no questions sort them.

Then:

• Fix when shoppers are looking (2) and you can name the fix (3). The product has demand it is failing to turn into profit.
• Bundle when demand on its own is weak but it is bought with a best-seller (4) and it can make money inside the bundle.
• Drop when it loses money (1) and no fix you can name turns that round, or the fix costs more than it would ever earn back.
• Leave when it makes money (1), costs little to hold and there is no clear fix. Keep it in stock and listed accurately, spend no extra time on it, and give it no advertising beyond the search terms that have already proved they pay.

“Leave” is not a cop-out; the mistake is leaving products by default rather than on purpose. Our inventory playbook uses the same idea for reordering: heroes, fixable products, cash traps and strategic keepers.

Score each decision in pounds

Once each product has a decision, you need an order to work in. We use one number.

Sort by prize and start at the top. A fix that adds £300 a month and costs £1,200 beats a perfect listing for a product that adds £10 a month. If the prize is smaller than the cost of anyone’s time to deliver it, the honest answer is “leave”.

A worked example

Here are four products from the tail of an imaginary brand with 60 products. The figures are invented. Profit per unit is after VAT, Amazon’s referral and FBA fees, cost of goods and returns, but before advertising and storage. Storage uses the January to September rate of £0.76 per cubic foot².

Between them they sell £3,195 a month (£1,800 + £720 + £450 + £225) and make £128.03. A looks healthiest on sales and loses money.

A: fix. Shoppers are looking at it, but too few of them buy. Start with the ads: cut spend to £300 by stopping search terms that brought clicks but no sales. Those terms sold nothing, so units hold at 120: £384.00 − £300.00 − £13.68 = £70.32, already £120.00 better. Now suppose the search card shows the wrong pack size and the listing’s facts disagree, and fixing both lifts sales from 120 to 180 units a month. Profit: 180 × £3.20 = £576.00, minus £300.00 ads and £13.68 storage = £262.32. That is £312.00 a month better than today. Say the new images and copy cost £1,200: the prize is £312.00 × 12 − £1,200 = £2,544. Storage is kept the same to keep the sum simple.

B: leave. It makes £214.53 a month with no advertising and costs £5.47 to store. There is nothing to fix that would be worth the time. Keep it in stock and move on. Prize: £0, which is fine.

C: drop. It loses £62.70 a month and nobody is searching for it. Each unit cost £12.00 to make, so the 90 in stock cost £1,080, and that money is spent whatever you do next. The gain comes from not reordering. Suppose, as with A, the ads were buying clicks rather than sales, so it keeps selling about 15 a month with the ads off. Then the 90 units sell through in six months, well before 241 days if the stock is young enough. Average stock falls from 82.5 units in the first month to 7.5 in the sixth: 270 unit-months × 0.5 cu ft × £0.76 = £102.60 of storage. Profit over the six months: 90 × £2.10 = £189.00 − £102.60 = £86.40, then nothing, because you don’t reorder. Keeping it as it is would lose £62.70 × 12 = £752.40 over the same year, so the prize is £86.40 + £752.40 = £838.80. If those six months fall in October to December, storage at the £1.51 peak rate would be 270 × 0.5 × £1.51 = £203.85, turning the £86.40 into a £14.85 loss: still far better than keeping it. Sell-through only works if it beats the clock; leave the stock sitting and the cost grows: in peak months its storage is 45 × £1.51 = £67.95 a month², and once the units reach 241 days the aged surcharge adds 45 × £1.18 = £53.10 that month, then 45 × £3.14 = £141.30 the month after³.

D: bundle. It makes only £25.88 a month on its own, but shoppers often buy it with hero product H, a £20 best-seller that makes £5.00 a unit before ads and storage. Offer H and D together for 10% off the £29 combined price. Suppose the discount costs you £2.00 a bundle after VAT and the lower fees. Each bundle makes £5.00 + £1.40 − £2.00 = £4.40. If it sells 60 bundles a month and 45 of those shoppers would have bought H alone anyway, the bundles make 60 × £4.40 = £264.00 against 45 × £5.00 = £225.00 from H on its own: £39.00 a month better. D’s own sales carry on. The bigger gain is that D’s 80 units now move at about 85 a month instead of 25, so they never get near 241 days, and you will need to reorder sooner. Prize over 12 months: £468, if your account has the bundle tool, since there is no setup fee for a virtual bundle⁶.

Before: £128.03 a month. After: £262.32 + £214.53 + £0 + £25.88 + £39.00 = £541.73. Once C has sold through, that is £413.70 a month, or £4,964.40 a year once running, from four products nobody was looking at. The first year is lower, because the fix costs £1,200 and C takes six months to clear: add up the prizes and it is £2,544 + £0 + £838.80 + £468 = £3,850.80 better.

Fix: find the reason, not a better listing in general

A fix needs a named reason the product under-sells. Our audit standard checks the same things on a tail product as on a best-seller. In our audits, three of them find most of the problems on slow products:

• What the shopper sees on the search card. The price shown, the pack size shown and the delivery promise, against the cards around it.
• Whether the listing’s facts agree. Two different sizes, weights or quantities on one page cost sales and invite returns.
• Basket size. Whether a multipack or set exists, and whether the “Frequently bought together” slot goes to you or to a rival. This is the check that turns up bundle candidates.

Then look at the advertising. Our break-even ACoS guide shows the most a product can spend on ads before every sale loses money, and our guide to advertising at portfolio scale sets out how we give the tail a small, strict budget: exact-match terms that have already converted, or nothing.

Bundle: virtual or physical

A virtual product bundle is a single listing made of separate products. Amazon’s UK help page describes bundles of “two to five complementary ASINs that are bought together from a single detail page”, with the components “fulfilled and shipped individually"⁶. It lists the United Kingdom among the stores where bundles can be created⁶. The rules worth knowing:

• You need a Brand Representative or Authorised Reseller role in Brand Registry, and every component needs “active FBA inventory in the ‘New’ condition"⁶.
• The price is the sum of the components less a discount percentage you set. If the bundle costs more than buying the parts separately, including any deals running on them, it loses Featured Offer eligibility⁶.
• Fees are the same “as if they were purchased individually”, and there is “no additional fee for creating or selling a virtual bundle"⁶.
• The bundle has its own reviews, can’t sit in a variation family, and can be advertised with Sponsored Products and Sponsored Brands⁶.

An earlier Amazon staff post on its seller forum said US only, so we check each UK account before planning around it. Check the tool appears in your own account. If it doesn’t, a physical pack is the route, with its own fees.

A physical pack or multipack is a new product: you pack it, list it and send it in as one unit, and it pays fulfilment fees for its own size and weight. Run its fees through our FBA calculator before you order packaging.

Either way, do the cannibalisation sum above first. The Market Basket Analysis dashboard shows brand owners “what products Amazon customers (in aggregate) most frequently bought at the same time” as theirs⁸, which tells you which pairs are worth testing. Our Brand Analytics guide shows how to read it.

Drop: clear the stock before the 15th

Dropping a product is two jobs: stop paying to sell it, then stop paying to store it. Stop the ads the same day and cancel the next order. Then choose how to clear the stock you already hold. Product C is a standard-size unit of 501–1,000 g that cost £12.00 to make and brings in £14.10 a sale after VAT, fees and returns (£2.10 profit plus its £12.00 cost). Here is the cash each route brings back for the 90 units:

Liquidating stock that could still sell would turn £1,080 of stock into £99.90. Use liquidation, removal or disposal for the units that can’t sell in time, not as the first answer.

The 7.5% is the rate in Amazon’s own worked example, and Amazon says the rate “may vary based on contracted rates with the liquidators"⁵. Amazon “will attempt to arrange a buyer” within 30 days, the money arrives about 60 days after the removal is marked complete, and you need a verified VAT number and the VAT Calculation Service to take part⁵.

Timing matters as much as method. The aged surcharge is assessed on the 15th of each month, and Amazon says it is “sufficient to submit the removal request before the inventory cleanup date and the removal does not need to be complete"³. The Recommended Removal report lists the units due to be charged, but Amazon says it only picks them up in the six weeks before each cleanup date³, so check it monthly. Removed ASINs “should not be restocked for the following eight weeks"³. Since 1 May 2026 removal fees are charged as each unit is removed⁴.

Two cautions on the gain. The stock you hold is already paid for: whatever route you pick, its cost is spent, so compare routes on the cash they bring back and write off only what you can’t sell. And dropping a product saves its losses and its storage, not its share of your overheads: your team, your software and your warehouse rent stay the same. Count only what really stops.

What our audits taught us about the tail

Recently a brand became a client after a free audit aimed squarely at them: slow-moving products, checked for the profit each one was leaking.

We have also learned what does not work. A prospect we didn’t win told us the product our free audit focused on was not a top priority or a big seller. The findings were sound; the product was wrong. Now we choose the products to audit by money: the biggest prizes first, whatever the sales report says.

And a finding is not the same as a win. The brand that became a client also already knew about its missing stock. What it wanted was a change whose net benefit beat its cost. That is the prize formula above, and it is why every fix in our audits carries a £ figure. Our How we measure page explains how we work each one out.

A tail review every quarter

After the first time it takes an afternoon, because most of the tail will be marked “leave” and won’t need looking at again until something changes.

If you would rather we ran this with you, it is the same sort we use in a Profit Audit, with every £ figure worked out from your own account.