Amazon's October sale is over: now sellers need to find out what they actually earned

AI-generated illustration.

Amazon's US Prime Big Deal Days event ran on 6 and 7 October, giving sellers an early burst of holiday-season trading to examine. The next buying decision should depend on what those orders earned, not simply how high the sales chart climbed.

Amazon promoted the 48-hour event across categories including electronics, beauty, toys, fashion and home. Its programme included limited-time deal drops three times a day and offers aimed at both seasonal shopping and early gifts. These were promotional claims and event mechanics, not evidence that every participating seller increased profit.

With the event over, a retailer has two separate jobs: deliver the orders already won and decide whether the resulting demand justifies replenishment. Confusing the two can turn a successful promotion into an expensive stock position before November.

Start with the order, not the dashboard total

A promotional order can carry several costs that a revenue graph does not show together. The selling price may be lower, advertising spend higher and fulfilment more expensive than expected. Refunds and returns can arrive later. A first review is useful now, but it should be marked provisional until those later adjustments are visible.

For a simple hypothetical example, suppose 100 additional orders each leave £4 after product cost, marketplace charges and fulfilment. That produces £400 before incremental advertising and promotional costs. If attracting those orders cost £350, the apparent success has only £50 left before any further losses or overhead. The figures are illustrative, not Amazon fee rates.

Use the same cost basis for promotional and ordinary weeks. Otherwise, a comparison that charges advertising to one period but ignores it in the other tells very little. Where a cost cannot yet be confirmed, record the estimate and replace it when the settlement or invoice arrives.

Did the offer create demand or borrow it?

A sharp increase during the event may partly represent customers buying earlier than they would otherwise have done. It may also reflect a price that cannot be maintained. Neither makes the promotion automatically bad, but both affect the next purchase order.

Compare sales after the deal ends with a normal trading baseline for the same product. Keep promoted items separate from products that received no special treatment. Note when advertising, stock availability or a competitor's price changed, because those factors can make a simple before-and-after comparison misleading.

For wholesalers supplying marketplace sellers, this is a good moment to ask what the repeat order represents. Is the customer replacing ordinary demand, extending a proven promotion or making a speculative commitment for the next event? A large replenishment request carries a different risk in each case.

Reorder the useful assortment

A promotion can empty the popular variant while leaving the rest of the case untouched. Before repeating the original assortment, inspect sales by size, colour, model and pack quantity. Where the supplier allows it, rebuild the order around the units that actually moved at an acceptable contribution.

Also check what is already inbound. A late replenishment shipment may be absent from the available-stock screen but still fully payable. Buying again because the shelf looks empty can leave two orders arriving together after the promotional demand has passed.

Amazon's Revenue Calculator can help compare estimated selling and fulfilment costs for a specific product and marketplace. It is a starting point for the calculation; use your own advertising, preparation, purchase and expected return costs alongside it.

Before committing to the next promotion, write down what changed because of this one: the price that worked, the stock that sold, the costs that surprised you and the quantity you can justify ordering again. The useful outcome is a better November buying decision, rather than a screenshot of a very busy Tuesday.

Source: Amazon's US Prime Big Deal Days 2026 event announcement. Event dates refer to the US promotion; the seller review and numerical example are WholeMan analysis.