Everything for Amazon Sellers—in One Base.

In every public Amazon channel we checked on 2026-08-19 — its seller-facing content, its research site, and its own forums — Amazon has not announced, named, or documented a search algorithm called “A10.” The term was created by the seller and agency community, not by Amazon. Every page that ranks for the phrase is a third-party interpretation of ranking behavior — useful in places, but not an official specification, and not something you can look up in Amazon’s own documentation. ...

When sellers say they want to ship all their Amazon FBA inventory to one warehouse, they are describing an option Amazon actually sells: minimal shipment splits. You send one shipment to one destination, Amazon redistributes the units across its network afterwards, and you pay a per-unit FBA inbound placement service fee for the privilege. The free alternative — Amazon-optimized shipment splits — costs $0 in placement fees but requires you to send to four or more locations and to meet a carton-uniformity requirement many small sellers cannot meet. So this is an arithmetic question, not a policy question: one warehouse is cheaper whenever the placement fee costs less than the extra freight you would pay to split. ...

Amazon FBA reserved status means your units are physically in Amazon’s fulfillment network but temporarily held out of your Available quantity. Amazon names exactly three reasons for it — Customer Orders, FC Transfers, and FC Processing — and in Amazon’s own words, “reserved inventory is a normal part of your FBA business.” Only one of the three carries a published timeframe: FC Transfers, which Amazon says “could take 22 to 25 days to complete.” ...

Amazon FBA prep requirements come in two layers, and most rejected shipments fail because the seller only read one of them. Layer one is general packaging — every unit must arrive in a single sealed package, with a scannable barcode and no old barcodes visible. Layer two is product-specific prep — bagging, bubble wrapping, opaque bagging, or set labeling, triggered by what the product actually is. This guide lays both out by product type, with the numbers that matter: 1.5 mil minimum poly bag thickness, a 5-inch bag opening as the suffocation warning threshold, and warning text sized by the total length plus width of the bag. ...

Item Highlights is an Amazon listing field that holds 125 characters of shopper-facing product detail and displays beneath the product title — in search results and on the product detail page. Its content is indexed for search. Since August 10, 2026 it sits in the same place on desktop and on mobile, rather than sharing the title line on desktop. It arrived alongside the 75-character title cap, and together the two fields carry the 200 characters of product information a listing used to fit into one long title. ...

Amazon FBA Delivery Window: The 7-Day Cross-Border Rule Reported for 1 September 2026 The rule Amazon has actually published says a cross-border FBA inbound shipment needs a 14-day delivery window and a domestic one needs 7 days, and only sellers on a non-partnered carrier have to enter it at all. Trade press reported on 13 August 2026 that international shipments into the UK, Germany, France, Italy and Spain move to a seven-day window from 1 September 2026 — but as of 18 August 2026 we could not open an Amazon-published page that says so. That gap is the whole point of this guide: the change is credible and worth preparing for, and it is also not something you should treat as confirmed policy until Amazon’s own page or your own Seller Central notification says it. ...

Amazon Warehousing and Distribution (AWD) comes to Germany, France, Italy, Spain and the United Kingdom on 20 August 2026. That date, and those five countries, come from Amazon’s own announcement to European sellers. Everything else circulating about the launch — European storage rates, box size and weight limits, warehouse locations, an earlier inbound date — is not on any Amazon page a logged-out visitor can read, as of 2026-08-18. This page separates the two. It quotes what Amazon has stated, records exactly which official URLs were checked and what they returned, and names the numbers that could not be confirmed rather than borrowing them from resellers of the news. If you want the mechanics of the programme itself — the five-stage flow, the US rate structure, the dwell-time maths that decides whether bulk storage pays — that is the Amazon AWD guide; this page is only about the European opening. ...

TikTok Shop vs Amazon for Sellers: Referral Fees, Fulfillment, and the Gates Before a Second Storefront TikTok Shop’s platform referral fee in the US store is 6% per qualified order — not 8%, and not 20%. TikTok Shop’s own Seller Academy states: “Starting April 1, 2024, TikTok Shop will increase the referral fee on all qualified transactions to 6% per order” (TikTok Shop Academy, page checked 2026-08-17). Amazon’s US referral fee is set per category and runs from 8% to 45%, with 15% the most common rate and a $0.30 per-item minimum (sell.amazon.com/pricing, checked 2026-08-17). ...

The Amazon Associates Program, Explained: Approval Rules, the 180-Day Three-Sale Test, and US Commission Rates The Amazon Associates program is Amazon’s own affiliate program: you place tagged links to Amazon products, and Amazon pays you a fixed percentage of the revenue from purchases those links generate. Three mechanics decide whether it pays you anything. Amazon must accept your site as suitable; you must refer three qualifying sales within 180 days of applying, or the application is withdrawn; and what you earn is a fixed rate set per product category, which on amazon.com ranges from 0.00% to 10.00%, with 4.00% for “All Other Categories.” ...

How Many Sellers Are on Amazon? Registered vs. Active vs. Actually Selling There is no single number, because “how many sellers are on Amazon” is three different questions. The most recent third-party estimates are roughly 500,000 active sellers on Amazon.com as of March 2026 and 1.65 million active sellers worldwide at the end of 2025, both from Marketplace Pulse, which counts a seller as active if the account received at least one piece of buyer feedback in the past year. The much larger registered-account figures you see quoted trace back to a March 2021 Marketplace Pulse count and have not been refreshed since. ...

Amazon does not publish a fixed timeline for when a submitted review appears. We checked the five customer-facing help pages that govern reviews on 2026-08-17 — Customer Reviews, Submit a Review, Community Guidelines, Understanding Customer Reviews and Ratings, and the Anti-Manipulation Policy — and none of them states a number of hours or days. What Amazon does state is the gate: on the Submit a Review page, “Your submission must follow our Community Guidelines or we won’t post the review,” and on Understanding Customer Reviews and Ratings, “Before posting a review, we check if it meets our Community Guidelines.” Every “24 to 72 hours” figure you have read is a third-party observation, not an Amazon commitment. This guide separates the two problems hiding behind the same sentence, lists the filters Amazon actually documents, and covers the seller routes Amazon explicitly permits. ...

Three European fulfilment setups, and one variable decides all of them: where Amazon is allowed to keep your stock. Pan-European FBA spreads your inventory across the countries you enable, and Amazon states plainly that “a VAT number is required for each country where goods are stored” (sell.amazon.de, data checked 2026-08-16). The European Fulfilment Network keeps stock in one country and ships across borders from there, so storage triggers no new registration — Amazon’s own comparison says “a VAT number is generally not required in the destination shop” (same page, checked 2026-08-16). Country-specific FBA sits between the two: you choose the countries, and you register in each one you choose. ...