FLUF Connect

Crosslist from eBay to Amazon — start by auditing what is even eligible

Two filters cut an eBay catalogue down before any tool touches it: does the item carry an identifier, and does Amazon allow used goods in its category. What passes, what never will, and what syncs across 50+ marketplaces.

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Key Takeaways — crosslisting from eBay to Amazon

  • Start by working out how much of your stock is even eligible. Two filters cut an eBay inventory down before any tool touches it: does the item have an identifier, and is its category one Amazon allows used goods in. Most eBay sellers overestimate both.
  • Filter one: an identifier. Amazon needs an ASIN, or a barcode — EAN, UPC, GTIN or ISBN. eBay never asked you for one, so for most sellers this data simply does not exist yet and has to be created.
  • Filter two: condition by category. Amazon’s UK condition guidelines make Apparel, Shoes and Bags, Sports, Baby, Pet and Grocery New only. If your eBay business is used clothing, the eligible portion of your catalogue is zero.
  • What survives both filters is usually media and hardware. Books, vinyl, CDs, DVDs, games, cameras, tools, small appliances — barcoded by the manufacturer, and in categories where Amazon welcomes used stock.
  • Your listing craft does not come with you. Attach an offer to an existing product page and Amazon keeps that page’s title and photographs. The years you spent learning to write an eBay listing buy you nothing here.
  • The condition note is the exception, and it is worth care. 2,000 characters, and the only place your own words reach a buyer choosing between four offers on one page.
  • Protection runs one way today. An eBay sale zeroes your Amazon stock. An Amazon sale does not yet pull the eBay listing down — so keep eBay as the channel you actually watch.
  • Through FLUF Connect: manage one catalogue across 50+ marketplaces. eBay and Amazon do not require a browser extension. 7 days for £1, then from £9/month. There is no free plan.
The FLUF Connect listings screen showing one product record and the marketplaces it is live on
One product record on the left, the channels it reaches on the right — and Amazon accepting only the rows that carry an identifier.

On this page

First, audit: what can actually go

Almost every guide to this route starts with how to connect the two accounts. That is the easy part and it is the wrong place to start, because for a typical eBay seller the honest answer to “can I move my eBay listings to Amazon?” is “some of them, and possibly none of them.”

Run your inventory through two filters before you do anything else.

Filter one. Does the item have a manufacturer identifier? Not a SKU you invented — a real ASIN, EAN, UPC, GTIN or ISBN. eBay has never required one, so if you have been listing by typing titles and uploading photographs, this field is empty across your entire catalogue.

Filter two. Does Amazon permit used goods in this item’s category? Amazon’s published UK condition guidelines carry an explicit New-only section, and it covers Apparel, Shoes and Bags, Sports, Baby, Pet and Grocery, along with everything consumable, ingestible or topical. Its wording on the first is flat: “Only New items are permitted to be sold in the Apparel category on Amazon.co.uk.”

Now sort your listings into three piles.

Pile What is in it What to do
Goes today Barcoded stock in a used-friendly category: books, vinyl, CDs, DVDs, games, cameras, tools, small appliances Crosslist it
Goes with work Right category, no identifier recorded — or new own-brand stock Capture barcodes, or apply for a product ID exemption
Never goes Used clothing, shoes, bags, sportswear; used beauty, grocery, supplements; anything genuinely one-of-a-kind and unbranded Leave it on eBay and stop planning around it

For a used-fashion seller, pile three is the whole business. That is not a reason to be disappointed in Amazon — it is a reason to point the same energy at Vinted, Depop or Vestiaire Collective, all of which want exactly the stock Amazon refuses.

Getting identifiers onto stock that has none

For the second pile, there are three routes and they suit different sellers.

Scan the barcode you already have in your hand. If the item is physically in front of you and it is a book, a record, a boxed game or almost any manufactured product from the last thirty years, the barcode is printed on it. This sounds trivially obvious, and it is still the route most sellers skip. For a bookseller, an ISBN scan is the entire integration.

Find the ASIN on Amazon and record it. Search Amazon for the exact product, take the ten-character code from the product page, put it on the product in FLUF. This is more reliable than a barcode for anything with variants, because you are choosing the exact catalogue entry rather than letting a match decide. It is also slower, and it is worth reserving for higher-value items where a wrong match would actually hurt.

Apply for a product ID exemption. For your own brand, or genuinely handmade goods, or bundles, Amazon grants exemptions from the identifier requirement. You choose “I don’t have a product ID” in the listing flow and an application appears; Amazon wants images showing all sides of the product and its packaging, and says approval “usually takes about 48 hours.” Two things to know before you rely on it: “You need separate approvals for each product category and store”, and if you designate a product as generic, “once you designate a product as generic, it cannot be changed.”

One warning that is worth more than any of the above. Matching to the wrong catalogue entry is worse than not listing. Attach your offer to a similar-but-not-identical product and you have promised a buyer specific specifications they will not receive. Amazon treats the resulting complaint as an inauthentic or not-as-described item, and that is one of the faster routes to an account problem. FLUF refuses rather than guessing when it cannot resolve an identifier, and the refusal names the fix: add an ASIN or barcode, or list it by hand once and let FLUF keep it in sync afterwards.

The categories that will refuse you

Beyond the New-only list, Amazon gates a range of categories behind pre-approval — you apply for permission to sell in them rather than simply listing. Amazon’s condition guidelines put it as: “you may be required to obtain approval to list certain products.”

The practical symptom is confusing the first time you hit it, because it is silent. When a product sits in a gated or New-only category, the used, open-box, collectible and refurbished options simply do not appear — there is no error explaining why. If you cannot find a way to say “used”, that is almost always the reason.

Ink and toner deserves its own mention because it catches clearance sellers: used is permitted only with Seller Support approval, and Certified Refurbished is prohibited outright.

What an Amazon listing is, coming from eBay

The mental adjustment is bigger than the technical one, and it is worth making before you push a hundred items.

On eBay you made a page. Your photographs, your title, your description, your condition wording, and a buyer who read all of it. On Amazon, in the normal case, you are attaching an offer to a page that already exists and that you do not own — the same page every other seller of that item is attached to. Amazon then decides which offer to feature: what it calls the Featured Offer, and everyone else calls the Buy Box. Everything else is relegated to a panel most buyers never open.

So the skills transfer badly. Photography, titles and description craft — the things that make one eBay listing outperform an identical one three rows down — are invisible on an offer attached to an existing entry. Amazon names its selection drivers plainly: competitive price, fast and free delivery, customer-experience metrics, and being in stock. An offer priced too high is ineligible, and so, less obviously, is one priced suspiciously low.

There is a smaller consolation than sellers hope for and a bigger one than they expect. The smaller: your feedback and your eBay reputation do not come with you, and you start from nothing. The bigger: neither does anyone else’s listing quality advantage, so a well-priced, well-stocked, quick-dispatching newcomer competes on genuinely level terms in a way that is far harder on eBay.

The condition note, and why it earns its keep

If you take one practical thing from this page, take this one.

An offer on an existing product page gets a condition note: up to 2,000 characters of your own text, shown to a buyer comparing offers. It is the only place your words survive. For used goods it does the entire job that an eBay description used to do — the scuff on the corner, the missing manual, the previous owner’s name inside the cover, whether the case is original.

Most sellers leave it near-empty or paste in a generic line. That is a mistake for the same reason a bad eBay description is: a used-goods buyer choosing between four offers at similar prices will pick the one that told them what they were getting. Write it as if it were the listing, because for your purposes it is.

FLUF populates it from your product description automatically, trimmed to Amazon’s 2,000-character limit. If your eBay descriptions are heavy on HTML formatting and light on actual condition detail, that is worth fixing at the source before you crosslist rather than afterwards.

What transfers, field by field

Field Offer on an existing entry New listing from a barcode
Title Not used — the shared page’s title stands Sent
Description Not used directly — becomes the condition note Sent, as plain text
Condition note Yes, 2,000 characters Yes
Photographs Not used — the shared page’s images stand Main image plus up to eight more
Brand Not used Sent where recorded
Condition grade Yes Yes
Price Yes, in your store currency Yes
Quantity Yes, merchant-fulfilled Yes, merchant-fulfilled

Two mechanical details worth knowing. Photographs are sent as URLs and fetched by Amazon rather than uploaded, so they have to be publicly reachable — an image behind a login produces a listing with no picture and no error, which is a worse outcome than a rejection. And updates are sent as patches rather than replacements, so anything you set by hand in Seller Central survives a FLUF price change instead of being wiped.

On condition mapping, one eBay habit does not translate. “New without tags” is a marketplace concept, not an Amazon one: by Amazon’s definition an item that has never been sold but is not factory-sealed is used, and grading it New is a misrepresentation. FLUF maps it to Used – Like New. On a New-only category the correct answer remains not to list it.

Repricing for a shared page

eBay pricing is largely a question of what your item is worth. Amazon pricing is a question of what the other offers on the same page are asking, which is a different exercise and a more continuous one.

Because the Featured Offer selection weighs price against the alternatives, an Amazon offer is not something you set once. Where an eBay listing can sit at a fixed price for months and eventually find its buyer, an Amazon offer at the wrong price relative to its page-mates is close to invisible and will stay that way.

Amazon also supports none of FLUF’s automation features — no relisting, no offer management, no smart pricing — so repricing on this channel is manual or it is not happening. That is a real limitation and it is worth weighing before you commit a large catalogue. It also means the automation tiers buy you nothing on the Amazon side of this route, though they do on the eBay side, where relisting and offer management both work.

What syncs, and the direction that does not

The point of running two channels is that one physical item is never promised twice. Here is exactly how far that protection extends today.

Works. An item sells on eBay — or on any other channel you have connected — and your Amazon quantity goes to zero. Price changes and stock changes push to Amazon. Listings can be removed.

Does not work yet. An item sells on Amazon and nothing happens elsewhere. Order sync is not claimed on this channel, so your eBay copy stays live. In practice that means keeping eBay as the channel you actually monitor, and treating Amazon as the one that gets cleared for you.

Amazon sales are not detected automatically by this workflow. Check Amazon orders yourself and mark sold items in FLUF so you can update the other listings.

Setting it up, step by step

  1. Get a Professional Amazon seller account. Third-party API integration is a Professional-plan capability; an Individual account cannot authorise FLUF.
  2. Connect eBay in FLUF and import your listings. This gives you the catalogue you are about to filter.
  3. Run the two filters. Sort by category first, since that is the cheaper cut, then by whether an identifier exists.
  4. Connect Amazon. You are sent to Amazon’s own consent screen; approve it there. No extension, no password shared with us.
  5. Check the resolved region and currency. Amazon regionalises everything, and your account’s marketplace decides the currency prices are submitted in.
  6. Add identifiers to one pile-two item and push it. Read what comes back before scaling.
  7. Then crosslist the eligible set. And write real condition notes on the used ones.

Test a small selection before publishing your full Amazon catalogue. Some categories may need additional listing details or support; check each submission’s status before continuing.

What it costs

7 days for £1, then from £9/month. There is no free plan and no free tier.

Crosslisting, inventory sync, order sync and bulk operations are on every plan. Relisting, offer management and smart pricing are included from Seller (£29/month) upwards; Starter does not include them. Paying annually saves 40%.

PlanMonthlyCrosslisted products
Starter£9/monthUnlimited
Seller£29/monthUnlimited
Pro£99/monthUnlimited
Super SellerCustom pricing — tell us what you needUnlimited

Sources and verification

Every fee, rule and limit was checked against a primary source on 7 September 2026.

What we could not verify, and therefore left out. The definitive list of Amazon categories that are gated or that refuse used offers — the authoritative document sits behind a Seller Central login, and the New-only list quoted here comes from Amazon’s own UK PDF, whose revision we cannot date later than about 2021. Amazon’s current title, bullet and description character limits: there is no single global figure, because those constraints are published per product type and per marketplace through Amazon’s Product Type Definitions API rather than as a table, so no character count for the title appears on this page. The proportion of a typical eBay catalogue that clears both filters — we describe the filters rather than putting a percentage on them, because no survey exists. And the acceptance rate of our own new-listing attribute maps, which cannot be known until real sellers have pushed real stock through them.

Frequently Asked Questions

No. Amazon's UK condition guidelines state “Only New items are permitted to be sold in the Apparel category on Amazon.co.uk”, and the same New-only restriction covers Shoes and Bags, Sports, Baby, Pet and Grocery. If your eBay business is pre-owned fashion, the eligible portion of your catalogue for Amazon is zero, and no crosslisting tool changes that. Vinted, Depop and Vestiaire Collective all want exactly that stock, and FLUF crosslists to all three.

Because Amazon is a catalogue and eBay is a listings board. On eBay your item is its own page. On Amazon you attach an offer to a product page that already exists, identified by a ten-character ASIN, so Amazon has to know which entry you mean. You supply an ASIN, or a barcode — EAN, UPC, GTIN or ISBN — that resolves to one. eBay never asked you for that data, so for most sellers it does not exist yet and has to be captured.

There are three routes. Scan the barcode printed on the item, which is the whole integration for a bookseller. Look the product up on Amazon and record its ASIN, which is more reliable for anything with variants. Or apply for Amazon's product ID exemption, which it grants for own brands, handmade goods, parts and bundles — you apply inside the listing flow with images of the product and its packaging, and Amazon says approval usually takes about 48 hours, granted separately per category and per store.

Usually not. If your offer attaches to an existing product page, that page keeps its own title and photographs, and your listing craft has nowhere to go. The exception, and it matters, is the condition note: up to 2,000 characters of your own text shown to a buyer comparing offers. For used goods that field does the whole job an eBay description used to do, and most sellers leave it near-empty. Only on the new-listing path, where you are creating a catalogue entry from a barcode, are your title, description and images used.

Not yet, and the asymmetry is deliberate. A sale on eBay — or on any other connected channel — zeroes your Amazon quantity. A sale on Amazon does not currently pull the eBay listing down, because order sync is not claimed on Amazon. Amazon's order feed includes a Pending status for payments that have not cleared and that Amazon cancels a meaningful share of; treating one as a sale would strip a real item off eBay for a sale that never happened. Keep eBay as the channel you actually watch.

You have promised a buyer specific specifications they will not receive, and Amazon treats the resulting complaint as an inauthentic or not-as-described item — one of the faster routes to an account problem. It is worse than not listing at all. FLUF refuses rather than guessing when it cannot resolve an identifier, and the refusal tells you the fix: add an ASIN or barcode, or create the listing by hand once and let FLUF keep it in sync from then on.

No. Amazon supports none of the three automation features — no relisting, no offer management, no smart pricing — so repricing on Amazon is manual. Those features do work on eBay, where relisting and offer management are both live, so the automation tiers earn their money on one side of this route and not the other. Crosslisting, inventory sync and bulk operations work on both and are on every plan.

For this route, yes. Third-party API integration is a Professional-plan capability, so an Individual account cannot authorise FLUF at all. Separately, the arithmetic usually points the same way once you are crosslisting in volume: Professional is £25 excluding VAT a month against £0.75 per item sold on Individual, so it pays for itself at about 34 UK sales a month.

50+ in total, with eBay and Amazon two of them. The stock Amazon refuses generally has a home elsewhere — used clothing on Vinted and Depop, designer resale on Vestiaire Collective, local goods on Facebook Marketplace and Gumtree. Pricing starts with the trial, then plans from £9/month, and paying annually saves 40%.

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