OC Systems Agency
Amazon Profit Watch

Revenue Doesn't Matter if Amazon Is Quietly Eating Your Margin

Find the leaks, fix the biggest ones, then watch them every month

Most sellers can tell you last month's revenue instantly and cannot tell you what was left. The gap between those two numbers is made of fees, ad waste, aged inventory, returns and listings that stopped selling without anyone noticing. We find it, rank it by size, and keep watching it.

Fee & FBA analysisPPC wasteInventory healthBuy Box & suppressionsReimbursementsContribution margin
Find Your Amazon Profit LeaksContact Us

The leaks are small, constant, and individually forgettable

None of these is dramatic enough to trigger an alarm. That is exactly the problem — they compound quietly for months, and Seller Central is not designed to put them in one place and rank them by what they cost you.

  • ✗Advertising spend on search terms that have not converted in months
  • ✗FBA fulfillment and referral fees that changed on a product whose price never did
  • ✗Long-term storage surcharges on units that have sat since last season
  • ✗Stranded and suppressed listings still costing storage while selling nothing
  • ✗Buy Box share lost to a reseller, so ad clicks arrive and buy from someone else
  • ✗Returns at a rate that quietly moved a profitable SKU under water
  • ✗Inbound shipments where fewer units were received than you sent
  • ✗Stock-outs on your best SKU that also cost you the rank you had built

The compounding effect is what makes this worth doing. A fee change worth a few hundred dollars a month is easy to ignore once and expensive to ignore twelve times, and the ad waste tends to be the largest single line — it is the one cost that grows automatically while you are not looking.

What We Analyse

Advertising spend and wasted PPC — the terms, targets and campaigns paying for clicks that never convert
Referral, FBA fulfillment and storage fees, checked at SKU level against the price they were set on
Aged inventory and long-term storage surcharges, with the units driving them named
Stranded and suppressed listings — what broke and what it is costing to sit there
Buy Box ownership and the price or seller issues losing it
Return rate by SKU, including the SKUs where returns have quietly erased the margin
Reimbursement opportunities: lost, damaged and never-received inbound units
Inbound discrepancies against your shipment records
Pricing and contribution margin against your real landed cost, where you can give it to us
Advertising efficiency in TACOS terms, not just ACOS
Stock-outs and the lost sales and rank that follow them

The monthly view an owner can actually read

Money in, money out, money left — then the things costing you the most, biggest first. Every line is tagged so you always know which numbers came from Amazon and which ones we worked out.

Money in

  • Product sales$184,200Known
  • Promotional rebates−$2,140Known

Net revenue$182,060

Money out

  • Referral fees$27,630Known
  • FBA fulfillment fees$31,410Known
  • Storage & aged-inventory surcharge$4,870Known
  • Advertising spend$22,300Known
  • Refunds & returns$9,120Known
  • Landed product cost$61,800Estimate

Total cost$157,130

Money left

$24,930

Estimated contribution profit · 13.7% margin

Estimate

Marked as an estimate because landed product cost is not in Amazon's data — it comes from you. Give us real COGS and this line becomes known; give us nothing and we will say so rather than invent it.

What needs attention

  • 1
    PPC waste — 41 search terms, no conversions in 60 days$3,180 / monthEstimate

    Spend is known from the ad report. The saving assumes those terms are negated and the budget is not simply redeployed.

  • 2
    Aged inventory — 640 units past 271 days$1,240 / month surchargeKnown

    The surcharge is charged on the invoice. What the units eventually recover is not knowable in advance.

  • 3
    Suppressed listing — main image fails the size requirementNot estimatedEstimate

    The listing is suppressed, which is a fact. What it would have sold is a guess, so we do not put a dollar figure on it.

  • 4
    Reimbursement opportunity — 18 inbound units never received$820 claimableKnown

    Unit count and cost basis both come from your shipment records.

Sample data, shown to illustrate the format. These are not a client's results and not a projection of yours. Where cost data is unavailable in a real report, the line says so instead of showing a number.

How Profit Watch Runs

1

One full audit pass

We go through fees, ads, inventory, listings, returns and reimbursements once, thoroughly, and come back with a ranked list — biggest cost first, with the reasoning shown so you can check the arithmetic yourself.

2

Work the top of the list

Negatives and bid work on the ad waste, inventory actions on the aged units, listing and Buy Box fixes, reimbursement cases filed. We start where the money is, not where the work is easiest.

3

Watch it monthly

The leaks come back — fees change, terms drift, a new SKU strands. Monthly you get money in, money out, money left, and what needs attention now, in language you can act on without opening Seller Central.

Audit, Fix, Then Watch

The audit is a real deliverable in its own right. Plenty of sellers take the findings and work the list themselves — the monthly service exists because the leaks come back.

Step 1

Amazon Profit Audit

One pass over fees, advertising waste, aged and stranded inventory, returns, Buy Box loss, suppressed listings and reimbursement opportunities — ranked by size.

$750 one-time

Step 2

Profit Optimization

We work the ranked list: negatives and bid work on the ad waste, inventory actions on the aged units, listing and Buy Box fixes, and reimbursement cases filed.

From $1,500

Ongoing

Monthly Amazon Profit Watch

An owner-level monthly view — money in, money out, money left — plus what needs attention, biggest item first.

$500 / month

Further reading

All Amazon PPC articles →

Frequently Asked Questions

What do you need from me to run this?
Reporting access to Seller Central and your advertising account, which covers fees, ad spend, inventory, returns and listing status. The one thing Amazon does not know is what your product costs you landed: unit cost, freight, duty and inbound. If you can give us that, contribution margin becomes a real number; if you cannot, we show gross contribution after Amazon costs and label it clearly rather than filling in a guess. Bring it at whatever resolution you actually have. A per-SKU landed cost is ideal, a blended figure across a product family is workable, and a rough number you are unsure of is still useful as long as you tell us it is rough, because every figure downstream of it gets marked as an estimate on that basis. Nothing in the report depends on you rebuilding your bookkeeping first. The fee and advertising analysis runs on Amazon's own data either way.
How do you separate what is known from what is estimated?
Every line in the report is tagged. Fees, ad spend, refunds and storage come from Amazon and are marked known. Anything requiring an assumption, such as recoverable value on aged units, the saving from negating a set of search terms, or revenue lost to a suppression, is marked as an estimate with the assumption written next to it, so you can argue with the assumption rather than with the number. When something cannot be estimated honestly, the report says so instead of showing a figure. Two examples of where that line falls. A fee change is known: we can show the fee before, the fee after, and the units it applied to. What a stock-out cost you is not knowable, because it depends on demand that did not happen and rank you did not keep, so we show the units and the days it lasted and let you decide what to make of it.
How is this different from your Amazon PPC management?
PPC management runs the ad account. Profit Watch looks at the whole P&L, of which advertising is one line, often the largest leak but rarely the only one. Sellers who already have someone competent on the ads still lose money to storage surcharges, unclaimed reimbursements and a listing that has been suppressed for three weeks. Fees are the clearest illustration of why this is a separate job. FBA fulfillment fees rose by roughly eight cents per unit on average, and from April 17, 2026 a 3.5% fuel and logistics surcharge applies to US and Canada FBA fulfillment fees, extended to Multi-Channel Fulfillment from May 2, with Amazon putting the US FBA impact at about seventeen cents per unit. That surcharge is calculated on the fulfillment fee rather than on your sale price, so it lands hardest on heavy, low-priced units. Nobody managing your bids is watching for that.
Can this be my way into full Amazon management?
Often it is, and that is a fair thing to say out loud rather than pretend otherwise. The audit tends to surface problems that need someone actually working the account week to week, across listings, catalog, ads and account health, which is Amazon Full Management at $2,000 a month starting. But the audit is a complete deliverable on its own, and plenty of people take the ranked list and work it themselves. That is a reasonable choice if you have someone in-house with Seller Central access and the time to use it, because most of the top items are specific one-off actions rather than ongoing judgement: negate these terms, remove these units, fix this suppression, file these cases. What does not survive the do-it-yourself route is the watching. Fees change, search terms drift, a new SKU strands, and if nobody has a monthly slot to look, the same list rebuilds itself within a couple of quarters.
Do you file the reimbursement claims?
We identify them and prepare the cases. Filing on your behalf requires your account access and your agreement on each claim, and we do not open cases in your name without you seeing them first, because the case history sits on your account and a badly evidenced claim is worth less than no claim at all. Preparation means matching your inbound shipment records against what Amazon recorded as received, finding units marked lost, damaged in a fulfillment centre or disposed of without instruction, and assembling the shipment identifiers, dates and quantities a case actually needs. Two things worth knowing before you assume there is money here. Amazon opens some claim types automatically, so a share of what looks claimable has already been settled. And each type has its own eligibility window, after which the case closes regardless of merit, which is the main argument for looking on a schedule rather than once.
Will you tell me how much I will save?
We will tell you what each leak is costing based on your own data, and we will tell you which of those figures are measured and which are estimated. What we will not do is promise a saving before we have looked. Anyone quoting you a recovery percentage without seeing your account is quoting somebody else's account, and the variation between sellers is not small: a seller with tight inventory turns and a clean catalog may find little beyond this year's fee changes, while an account nobody has audited in two years usually has several quarters of drift sitting in it. There is a real chance the audit finds very little. If your advertising is already efficient, your aged inventory is minimal and your listings are clean, we would rather tell you that at the end of one audit than sell you a monthly service to keep confirming it.

Last reviewed by the OC Systems Agency team.

Reported figures depend on the data your Amazon account exposes. Where cost data is unavailable, contribution profit is presented as an estimate with its assumptions stated, and any figure that cannot be estimated honestly is reported as unavailable rather than filled in.

Find Your Amazon Profit Leaks

Tell us roughly what you sell and what a month looks like. We will show you where the margin is going — the fees, the ad waste and the inventory — and what the biggest items are worth fixing.

Find Your Amazon Profit Leaks

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