Prime Big Deal Days Case Study: Day One Up 56%, Ad Costs Down

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

Plenty of brands pour event-day budget into their own brand name. This skincare brand went after shoppers who had never heard of it. On day one of Amazon’s Prime Big Deal Days, October 6, 2026, it sold $368K, up 56% on the same day a year earlier, while search ad spend rose only 19% and TACoS fell from 16% to 12%. More than 85% of the budget went to shoppers who had not picked a brand yet.

+56%Day one sales vs. 2025$368K vs. $235K
12%Day one TACoSdown from 16%
85%+Budget on non-branded searchacross the event
5xDay one vs. average dayprior 30 days

A big June to beat, and Black Friday around the corner

The partner sells skincare on Amazon, from everyday moisturizers to treatment products. Its June Prime Day had been strong, averaging $318K a day, and the brand’s average day in the month before October was $73K. It also had a stock question. One of its two best sellers was needed for Amazon’s 12-day Black Friday to Cyber Monday event, only weeks away, and selling it out in October would cost more in November.

The play: chase new shoppers, guard November’s stock

  1. Fish where the new customers are. More than 85% of ad spend went to searches that did not name the brand. Shoppers who search the brand name tend to find it anyway; the event was a chance to reach the ones comparing products.
  2. Put a ceiling on the deal. Deal quantities on the second-best seller were limited on day one so enough stock would be left for the Black Friday to Cyber Monday event.
  3. Win back a lost badge. One product’s price was corrected, which restored its Prime Exclusive Discount and the deal badge shoppers look for.
  4. Give buyers a reason to return. On day two, a 15% Subscribe & Save coupon went live on every product, to turn event buyers into repeat buyers.

The day one scoreboard

Day one brought in $368K and 19,900 units. That is 56% above day one of the same event in 2025, 15% above June Prime Day’s average day, and 5 times the brand’s average day over the month before. Search ad spend was $44K, up 19% on the same day a year earlier, against sales up 56%. TACoS fell from 16% to 12%.

Day one sales against the brand’s other benchmarks

$73KAverage day, prior 30 days$235KDay one, 2025 event$318KAverage day, June Prime Day$368KDay one, 2026 event

Source: Amazon Seller Central and Amazon Ads, Prime Big Deal Days 2026. Figures rounded.

“Big day! Thank you Canopy Team for your hard work!!”

The partner, on day one

Day two was softer, as planned. With deal units capped on one of the two best sellers, there was less of it to sell. Across both days, the event averaged $350K a day, five times a normal day.

Why ad costs fell on the busiest day of the season

Branded searches are cheap and already convert, so brands often push more budget to them during events to protect returns. The trouble is that most of those shoppers would have bought anyway. Non-branded searches cost more per click, but each sale there is one the brand might not have made without the ad.

This account had spent the months before building non-branded campaigns that converted, so on day one the budget could go where the new shoppers were. Sales grew three times as fast as spend, which is why TACoS fell on the busiest day of the season.

Day one of the event against the same day in 2025
Day one sales
Up 56%

2025$235K2026$368K

Day one search ad spend
Up 19%

2025$37K2026$44K

Day one TACoS
Four points lower

202516%202612%

Day one units vs. an average day
6x

Avg day3,300Day one19,900

Source: Amazon Seller Central and Amazon Ads. 2025 spend derived from the reported day one TACoS. Figures rounded.

Event day is the best chance all year to meet shoppers who haven’t picked a brand. Don’t spend it on the ones already searching your name.

The full picture

Metric Day one, 2026 Compared with
Sales $368K $235K, day one 2025
Units 19,900 3,300 on an average day, prior 30 days
Search ad spend $44K $37K, day one 2025
TACoS 12% 16%, day one 2025
Sales vs. June Prime Day +15% $318K average day in June
Share of budget on non-branded search more than 85% across the event

All figures rounded, each in the less flattering direction. Day two was not reported separately; the event daily average comes from the partner review after the event.

The cleanest comparison here is day one against day one, since day two was held back on purpose to save stock for November. The two-day average is rounded from the post-event review. The partner is anonymous. We will update this page after the 2027 event.

Steal this for your next event

Three checks before the next one.

First, look at your split between branded and non-branded spend in the last event. If most of it went to your own brand name, you mostly paid for sales you already had. Second, check stock against the event after this one. With Black Friday weeks away, capping a deal in October can be worth more than the extra units. Third, add something that brings event buyers back. A Subscribe & Save coupon during the event costs little and keeps orders coming after the prices go back up.

An October event is two days, but the stock and customers it creates last into the holidays.

Frequently asked questions

What is non-branded search?

It is any search that does not include your brand name, like “vitamin C serum” rather than your brand. Shoppers on these searches have not chosen a brand yet, so ads there bring in new customers, while branded ads mostly reach people already looking for you.

Should I cap deal quantities during Prime Big Deal Days?

If the product is needed for a later event and restocking takes time, yes. Selling out in October can cost you the Black Friday to Cyber Monday event, when traffic is higher still. Set the cap from the stock you need to keep, not from what the deal could sell.

How long is Amazon’s Black Friday to Cyber Monday event?

In recent years it has run for 12 days, from just before Black Friday through Cyber Monday. Check the dates Amazon announces each year and plan your October stock around them.

Why add a Subscribe & Save coupon during a sales event?

Because event shoppers are new buyers at their most active. A subscription coupon turns some of them into repeat customers, so the event keeps paying after it ends.

Does Canopy manage Prime event budgets during the event?

Yes. Canopy brand managers adjust budgets, bids and deals with the partner through each event day.

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