Get Ready for Prime Big Deal Days Even If You Are Not Running Deals
Amazon has confirmed that Prime Big Deal Days will return on 6 and 7 October 2026, bringing 48 hours of Prime member-exclusive deals across all categories. Available to Prime members from 12.01am BST on 6 October, the event covers home, kitchen, electronics, toys, fashion, beauty, and self-care, with a strong autumn focus on entertaining, home décor, Halloween preparation, and early holiday gifting.
The event runs across 22 countries including the UK, making it one of the most significant shopping moments of the autumn calendar for marketplace sellers of any size.
What Prime Big Deal Days Actually Is
Prime Big Deal Days is Amazon's second major sales event of the year, following Prime Day in July. It operates on the same model, with thousands of deals exclusive to Prime members running across a fixed 48-hour window. Deals span top brands including Lego, Shark, and Braun, alongside seasonal favourites and everyday essentials, with Amazon's fast delivery infrastructure underpinning the event through Same-Day and Next-Day delivery across 80 cities and towns in the UK, and 30-minute delivery through Amazon Now in select areas including London and Manchester.
The Halo Effect: Why This Matters Even If You Are Not Running Deals
The most important thing for marketplace sellers to understand about Prime Big Deal Days is that you do not need to be running a deal to feel its impact. The event drives a significant spike in overall shopping activity across Amazon, and buyers who arrive on the platform looking for deals frequently browse beyond the promoted listings and purchase products that are not part of the official event at all.
This halo effect is well documented across major Amazon shopping events, and it means that sellers who are well prepared during the event window can capture meaningful additional sales simply by being in a strong position when buyer intent and traffic are at their highest. Conversely, sellers who are underprepared, out of stock, or running poorly optimised listings will miss the opportunity entirely.
How to Prepare Your Listings Before 6 October
The weeks before Prime Big Deal Days are the most valuable time to invest in listing quality, because the changes you make now will be indexed and active by the time the event traffic arrives. Review your titles, bullet points, and product descriptions on your highest volume listings and ensure they are as clear, complete, and keyword-rich as possible. Check that your main images meet Amazon's requirements and that your secondary images do the job of answering the questions buyers are most likely to have before purchasing.
Pricing is worth reviewing ahead of the event too. Buyers during Prime Big Deal Days are in a deal-seeking mindset, and competitive pricing on key products, even without a formal deal badge, can meaningfully improve conversion during the event window.
Stock Availability Is Non-Negotiable
Running out of stock during a major traffic event is one of the most costly mistakes a seller can make, and Prime Big Deal Days is no exception. Review your stock levels across your catalogue now and identify any products that could sell out if volume increases significantly over a two-day period. If you use FBA, check your inventory levels in Amazon's fulfilment centres and send replenishment stock in time for it to be received and processed before the event begins. Lead times for stock to be checked in can be longer than usual ahead of major events, so acting early is important.
For FBM sellers, make sure your handling time and dispatch commitments are realistic and that you have the capacity to fulfil any increase in order volume without breaching your stated timelines, since late dispatch during a high-traffic event period will affect your seller metrics at exactly the wrong moment.
Advertising During the Event
If you run Sponsored Products or other Amazon advertising, Prime Big Deal Days is a period where competition for ad placements increases significantly, which means CPCs tend to rise as more sellers compete for visibility. Review your campaign budgets ahead of the event and consider increasing daily budgets on your highest performing campaigns to ensure they do not run out of budget mid-event and leave you invisible during the peak traffic hours.
If you are not currently running advertising on Amazon, Prime Big Deal Days is one of the strongest arguments for starting, since the increase in buyer traffic makes it an unusually favourable time to invest in visibility.
The Broader Opportunity for UK Sellers
Prime Big Deal Days sits at the start of the autumn and winter selling season, which is the most commercially significant quarter of the year for most marketplace sellers. A strong performance during the event, or even just a well-prepared catalogue that captures the halo effect traffic, can set the tone for the months that follow leading into Black Friday and Christmas.
Sellers who treat Prime Big Deal Days as a preparation deadline rather than an event to simply watch happen will be in a meaningfully stronger position for the rest of Q4.