Prime Big Deal Days Case Study: Fewer Shoppers, Record Sales

Prime Big Deal Days, October 6 to 7, 2026, vs. the same event in 2025

Fewer shoppers showed up than expected. It didn’t matter. During Prime Big Deal Days on October 6 and 7, 2026, a body care brand known for its body butters grew sales 40% on the same event a year earlier and set its best fall event yet. The secret was conversion: three times the brand’s normal rate, with ad costs holding steady as a share of sales.

40%Event sales vs. 2025a record for the fall event
3xConversion vs. normalduring the event
6 of 8Top productswere body butters
SteadyTACoS and ACoSthrough the event

Selling scent and texture through a screen

The partner sells body butter, body mist and body wash on Amazon in the US and Canada. Body care is bought on scent and feel, which shoppers cannot test online, so reviews, images and price do most of the persuading. The team had seen a 20% deal convert noticeably better on search than a 15% one, and that shaped the event plan.

One bet: a bigger discount

  1. Go to 20%. The event deal went to 20% rather than 15%, on the view that a better conversion rate would pay for the extra discount.
  2. Catch the miss fast. The body washes had been left out of the event promotion by mistake. The team caught it on day one and had them live at their deal price by day two.
  3. Line up the encore. After the event, the team proposed a 10% to 15% remarketing offer to 7,000 shoppers who had engaged during the event, subject to the partner’s margin sign-off.

How the two days played out

Event sales rose 40% on the 2025 event, the brand’s best fall event so far. Sales ran three times an average day, and so did the conversion rate, even though fewer shoppers arrived than expected. Body butters were six of the eight best-selling products. Body mist, a smaller line, sold three times its usual units, from 20 a day to 60 or more.

Event days vs. an average day (average day = 1x)

1xAverage day3xEvent sales per day3xEvent conversion rate

Source: Amazon Seller Central, Prime Big Deal Days 2026, from the brand’s review after the event. Figures rounded.

Where the growth came from
Fall event sales
40% higher (index, 2025 = 100)

20251002026138

Body mist units per day
3x

Avg day20Event day60+

Source: Amazon Seller Central. Sales shown as an index to protect the partner’s data. Figures rounded, each in the less flattering direction.

Why the bigger discount was the cheaper choice

A 20% discount costs more per unit than 15%. If it also triples conversion, though, each ad click is far more likely to become a sale, so the advertising behind the event gets cheaper per order. That is why ad costs could hold steady as a share of sales while sales grew 40% on lighter traffic than planned.

Without the earlier sign that 20% converted better, the safer-looking 15% would have been the obvious pick.

You can’t control how many shoppers show up. You can control how many of them buy.

The full picture

Metric Result Compared with
Event sales +40% Prime Big Deal Days 2025
Event sales per day 3x an average day
Conversion rate 3x the brand’s normal rate
TACoS and ACoS steady normal levels
Body mist units 3x 20 a day normally
Event discount 20% 15% converted less well

All figures rounded, each in the less flattering direction. Results are reported as ratios and percentages to protect the partner’s data.

A word on the numbers: they come from the brand’s own review after the event, which reported growth as rounded percentages and ratios, so that is how they appear here. The 40% covers the US store; Canada was down on the year. And a two-day event says more about the discount decision than about the brand’s long-run trend, which is the part we will keep watching through the holidays.

Before you set your next deal, run one test

If we could ask one thing of every brand heading into an event, it would be this: stop picking the discount by gut feel. Plenty of teams pick 15% because it feels safe on margin, and never find out what 20% would have done. This brand had seen the difference on its own search terms, and the deeper deal converted three times as often as a normal day.

The test is simple. Run two discount levels on the same products, a few weeks apart, and watch conversion on search, not just sales. If the deeper discount lifts conversion by more than it costs in margin, it is the cheaper option on event day, because every ad click you buy is more likely to turn into an order. And on the morning of day one, check that every product you meant to include is in the promotion. One missed line here cost the body washes their deal price for all of day one.

Frequently asked questions

Is a 20% discount better than 15% for Prime events?

It depends on the product. For this brand, 20% converted noticeably better on search, enough to pay for the extra discount. Compare both levels on your own products before deciding.

Why can conversion rate triple during Prime Big Deal Days?

Event shoppers arrive ready to buy, and a strong deal removes their reason to wait. Products with good reviews and a visible discount turn far more visits into orders than on a normal day.

What if a product is left out of an Amazon event promotion?

Fix it as soon as you notice. Add it to the promotion or set the deal price in Seller Central. Checking every product on the morning of day one catches most of these mistakes early.

Does body care sell well during October Prime events?

Yes. Body care is a common gift and a regular repurchase, so October deals catch both holiday shoppers and existing customers stocking up.

Does Canopy test discounts before events?

Yes. Canopy brand managers use past results and tests to choose discount levels with the partner before each event.

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