Amazon.co.jp listing and advertising management
We work on the listing and the advertising as one system, and judge every change by what a single order leaves you after the referral fee, fulfilment, tax and what the stock cost.
Contribution and ad spend per day across 90 days, with the date of the change marked.
Illustrative shape, not account data.
Hover the chart, or focus it and use the arrow keys, to read values day by day.Open the table below to read the values day by day.
| Period | Contribution | Ad spend |
|---|---|---|
| Days 1 to 7 | ¥30,870 | ¥91,590 |
| Days 8 to 14 | ¥24,720 | ¥91,050 |
| Days 15 to 21 | ¥28,800 | ¥90,630 |
| Days 22 to 28 | ¥40,620 | ¥90,390 |
| Days 29 to 35 | ¥33,720 | ¥87,930 |
| Days 36 to 42 | ¥43,860 | ¥88,680 |
| Days 43 to 49 | ¥56,460 | ¥75,690 |
| Days 50 to 56 | ¥68,700 | ¥70,470 |
| Days 57 to 63 | ¥97,140 | ¥71,430 |
| Days 64 to 70 | ¥112,650 | ¥68,790 |
| Days 71 to 77 | ¥135,450 | ¥68,580 |
| Days 78 to 84 | ¥145,170 | ¥71,160 |
| Days 85 to 90 | ¥152,400 | ¥58,440 |
Sessions arrive and orders do not. The cause is usually on the page: images that do not answer the question the buyer came with, or a price sitting just past a fee threshold. More ad spend sends more people to the same page.
Where it shows up
The Business Report, as sessions against orders.
Broad and automatic campaigns match searches that share a word with the product but not the intent. Negating single words removes good traffic with the bad. Word order carries the meaning, so the negative has to carry it too.
Where it shows up
The search term report, as clicks with no orders.
An ACoS target only sees ad spend against revenue. It cannot see the referral fee, the shipping, the closing fee or what the stock cost. Some SKUs lose money on every advertised order while the report calls them healthy.
Where it shows up
Nowhere in Amazon's reports. It has to be calculated per SKU.
ACoS cannot see a single line below. It compares ad spend to ad revenue and stops there, which is why an account can hit its ACoS target every week and still lose money on the orders it wins.
Contribution per order
¥643
Break-even ACoS
25.9%
Maximum CPC
¥64
Worked example, Amazon.co.jp, FBA, Home & Kitchen (ホーム&キッチン), consumption tax on Amazon's fees reclaimed, 10% conversion rate. The referral fee and the tax rule are Amazon's and the tax authority's published figures, checked 27 September 2026. Price, landed cost, fulfilment, storage, prep and returns are example inputs, not your rate card. Not account data — every figure is computed from the inputs beside it and can be checked by hand.
That ceiling is contribution multiplied by the conversion rate of the search term. It is the number an ACoS target cannot produce, because it needs the fees, the tax and the landed cost — none of which appear in an advertising report.
Three services, defined by what arrives in your inbox rather than by a list of activities.
What we do
Titles, bullets, images, A+ content and backend search terms, rewritten against the search terms that actually convert.
What arrives in your inbox
The changed listing, the reason for each change, and conversion before and after once there is enough traffic to read it.
What we do
Campaign structure, bids, budgets and negatives across Sponsored Products, Sponsored Brands and Sponsored Display.
What arrives in your inbox
A log of every change: what changed, why, what it was expected to do and what it did. The changes that did not work are in it too.
What we do
Referral fee, fulfilment, closing fee, tax and landed cost pulled per ASIN and turned into contribution per order and a bid ceiling for each SKU.
What arrives in your inbox
A table of every advertised SKU with its contribution and maximum bid, updated when a fee or a price changes.
What we do
The store's page structure, category pages and shoppable content, so traffic from Sponsored Brands lands somewhere built to sell rather than on a default grid.
What arrives in your inbox
The built store, submitted to Amazon for review, and its traffic and sales broken out by page once it is live.
How often, for all four
A written report every week, in contribution per SKU rather than ACoS.
Add-on, priced separately
Buying the click outside Amazon and landing it on the Amazon listing, measured with Amazon Attribution so it is judged on orders rather than on traffic.
Quoted on top of the Amazon retainer, not bundled into it, because it is a separate amount of work on separate platforms. The quote follows the audit.
The first week is three dated deliverables. After that there is no next phase to wait through: changes go live as you sign them off, and the log moves the day each one does.
01 — Day 1
The fee report per ASIN, and sixty days of ads and sales — both pulled to the same dates, so they can be read against each other.
02 — Day 3
Contribution per order for every advertised SKU: what one order leaves you after the referral fee, fulfilment, tax and what the stock cost, and the highest CPC each SKU can pay for.
03 — Day 7
The one constraint holding the account back, the evidence for it, and the changes proposed to lift it, each with what it is expected to do.
Then, for as long as we run the account
Every change, in the log
The log updates when a change goes live, not at the end of the month: what changed, why, what it was expected to do, and what it did. The ones that did not work are in it too.
The written report
Contribution per SKU rather than ACoS, against the bid ceiling each SKU is working to, so the question is whether the account made money and not whether a ratio moved.
On every plan
Every plan includes a dashboard for your account: one place to see what has been done, what is proposed, and what it is expected to earn.
Access runs for the whole period you have paid for, month to month or the 90-day plan, and for three days after it ends.
Two files, both set to the last 60 days. Pull them from your own account and upload them here, and the audit comes back to your mailbox. No Seller Central access is requested, and nothing in your account is changed.
Where to find it
Seller Central → Advertising → Campaign Manager → Bulk operations → set the date range to the last 60 days → Download bulk file
Sixty days is as far back as bulk operations will go. An .xlsx file downloads with every campaign, ad group, keyword and bid in the account.
Where to find it
Seller Central → Reports → Business Reports → Detail Page Sales and Traffic by Child Item → last 60 days → Download
A .csv file with sessions, page views, units and conversion for every child ASIN. The same 60 days as the bulk file — this report will happily go back further, and read against mismatched windows every SKU looks cheaper to advertise than it is.