Amazon Is Loosening the Buy Box Eligibility Bar in the UK and EU on July 20 — Here’s Who Shows Up Next

Starting July 20, 2026, Amazon removes the seller performance eligibility requirement for the Buy Box in its UK and EU marketplaces — mirroring the Featured Offer eligibility change that already rolled out more broadly this July. Sellers no longer need to clear a performance threshold before their offer is considered in the Buy Box ranking; performance metrics instead become weighted factors inside the ranking itself, as Amazon confirmed in its own Seller Forums announcement covering both the EU/UK and US rollouts.

The mechanism is consistent with what’s happening elsewhere this year: Amazon is folding pre-filters into the ranking calculation rather than running them as separate pass/fail checks beforehand.

It helps to separate two things that sound similar but aren’t. Selection is about who is allowed to sell a given product on Amazon at all — gated by brand approval, category restrictions, or Amazon’s own catalog controls. Eligibility, the part changing here, is about whether a seller’s offer clears a performance bar before being considered for the Buy Box.

This change touches eligibility, not selection. Amazon isn’t opening up who can list a product — it’s changing whether an offer needs to clear a performance threshold before it’s ranked. That distinction matters because it means the change doesn’t stop an unauthorised seller from listing in the first place; it just removes one filter that used to keep weaker offers, including some unauthorised ones, out of the Buy Box conversation.

Under the old system, a newly appeared unauthorised seller on your listing usually had to build up performance history before they could seriously compete for the Buy Box — the eligibility gate acted as a natural delay. With that gate gone, a hijacker with an aggressive price and no track record enters the same ranking pool as an established seller from day one.

A private label brand selling into Germany and France told us their pattern used to be: an unauthorised seller shows up, undercuts price, but takes weeks to actually win meaningful Buy Box share because of the eligibility lag. That lag is exactly what disappears on July 20. The price undercut still happens — it just converts to lost Buy Box share faster, and the revenue math behind a hijacker takeover gets worse the faster that conversion happens. Marketplace Pulse has described counterfeit and unauthorised-seller activity as one of Amazon’s most persistent unsolved problems — removing a natural delay doesn’t fix that, it just narrows the window brands have to react.

Three controls still function the same way regardless of this eligibility change, because they operate on selection, not ranking:

• Amazon Brand Registry — gives you tools to report and remove unauthorised sellers and counterfeit listings, independent of how the Buy Box ranking works, though it’s worth understanding what brand gating does and doesn’t cover
• Transparency — unit-level serialization that makes it harder for unauthorised inventory to move through Amazon’s fulfillment network undetected
• MAP enforcement — contractual pricing agreements with authorised resellers that don’t depend on Amazon’s ranking mechanics at all

None of these were affected by the eligibility change, which is exactly why they’re worth leaning on more heavily now — they address who’s allowed to sell, which is the layer this update didn’t touch.

If you sell into the UK or EU, check your “Other Sellers on Amazon” section on your top ASINs starting July 20 — not next month. A new, unfamiliar seller appearing there is the earliest signal, and it now matters faster than it used to because the eligibility lag that used to buy you time is gone.

A Hijacker Detected alert catches that appearance in real time rather than during a weekly check, and a Buy Box Lost alert tells you the moment that seller actually takes the ranking, not after a week of declining sales makes it obvious. See what SentryKit’s pricing looks like if you’re not already watching your UK and EU listings this closely.