Prime Big Deal Days Case Study: $183K to $483K in Two Days

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

Shoppers had been eyeing these devices for weeks. When the price dropped, they bought. Over Amazon’s Prime Big Deal Days, October 6 and 7, 2026, a red-light skincare device brand sold $483K, 2.6 times the $183K it sold at the same event a year earlier. Day two beat day one, at $276K, and the top seller led the event without its deal badge.

2.6xTwo-day sales vs. 2025$483K vs. $183K
$276KDay two salesup from $100K
+59%Units vs. 20253,100 vs. 1,950
$6Sales per extra ad dollaradded sales vs. added spend

Weeks of browsing, waiting for one price

The partner sells at-home red-light skincare devices on Amazon: face masks, a neck and chest mask, a handheld wand and an acne device, plus serums to use with them. These are considered purchases. Shoppers research them for weeks and wait for a price that justifies the spend, which makes a deal event the moment a large share of the year’s demand turns into orders.

It also meant the month before was quiet. Over the 30 days before the event, the brand averaged $12K a day. The partner knew which campaigns it wanted pushed, and the event would be judged against last October.

The play: earn the placement, then own the top of the page

  1. Hit Amazon’s number. To qualify for event deal placement, the deal had to reach 35% off. The team raised it to that level rather than run a smaller discount without the placement.
  2. Go big where buyers decide. Budgets and bids went up on the campaigns the partner had chosen, with more weight on top-of-search placement, where shoppers who have already researched a device go to buy.
  3. Save fuel for day two. Budget held into the second day instead of being spent out on day one, and day two turned out to be the bigger day.
  4. Work around a missing badge. The acne device earned a spot in the Deals tab labeled “Lowest price in 365 days.” The face mask’s badge did not display on the morning of day one, so it relied on its search ads.

The scoreboard

Day one brought in $207K, up from $83K at the same event in 2025, and 17 times the brand’s average day over the month before. Day two was bigger again, at $276K against $100K a year earlier. Across both days, sales came to $483K, and units rose 59%, from 1,950 to 3,100. Both event days ran ahead of the brand’s average day during June’s Prime Day, by 25% across the two.

Sales by event day, 2025 vs. 2026
Prime Big Deal Days 2025Prime Big Deal Days 2026

$83K$207KDay one$100K$276KDay two

Source: Amazon Seller Central and Amazon Ads, Prime Big Deal Days 2026 vs. 2025. Figures rounded.

Pricier devices, bigger tickets

Sales rose 2.6 times while units rose 59%. The difference is what shoppers chose. Each unit sold during the event brought in $155 on average, against $94 a year earlier. The face mask, the brand’s highest-priced device, was the top seller across both days, without its deal badge. A shopper buying a device at that price has usually decided before the event starts and is waiting for the deal.

That is also why the advertising cost more. Search ad spend came to $66K across the two days, against $17K a year earlier, and TACoS rose from 9.5% to 14%. Spend grew faster than sales. Measured on what was added, though, each extra ad dollar brought in $6 in extra sales, on products shoppers were already ready to buy.

The event against the same two days a year earlier
Two-day sales
2.6x

2025$183K2026$483K

Two-day units
Up 59%

20251,95020263,100

Sales per unit
Shoppers bought the bigger devices

2025$942026$155

TACoS
Spend grew faster than sales, by choice

20259.5%202614%

Source: Amazon Seller Central and Amazon Ads. TACoS = search ad spend ÷ total sales. 2025 spend derived from the reported daily TACoS. Figures rounded.

For a product shoppers research for weeks, the event is decision day. Be at the top of the page with the deal when it comes.

The full picture

Metric 2026 2025
Day one sales $207K $83K
Day two sales $276K $100K
Two-day sales $483K $183K
Two-day units 3,100 1,950
Sales per unit $155 $94
Search ad spend, two days $66K $17K
TACoS, two days 14% 9.5%

All figures rounded, each in the less flattering direction: 2026 sales down, 2025 sales, spend and cost ratios up.

Two days is a short window. Part of the gain on 2025 reflects the brand’s growth over the year as well as the event plan, and TACoS rose, so the event bought growth at a higher ad cost. The partner’s own two-day total differed from the daily reports by less than 0.1%; the lower figure is used. The partner is anonymous. We will update this page after the 2027 event.

Steal this if you sell a considered purchase

Three checks before your next event.

First, find out what discount the event placement needs, and decide early whether your margin can carry it. A smaller discount without the placement often sells less than the larger one with it. Second, judge event spend on what it added, not only on TACoS. If extra ad dollars bring in several times their cost in extra sales, a higher TACoS for two days can be the right call. Third, plan for day two. Shoppers who compare prices on day one often buy on day two, so do not let budgets run dry overnight.

For products people research before buying, the event is the checkout line. Get to the front of it.

Frequently asked questions

What is Prime Big Deal Days?

It is Amazon’s October sales event for Prime members, two days long. In 2026 it ran October 6 and 7. Many shoppers use it to buy higher-priced items they have been watching, and to start holiday shopping.

Does Amazon require a minimum discount for Prime event deals?

Yes. Deal types carry minimum discount rules, and the required level can be set from the product’s recent prices. If your planned discount falls short, the deal may not qualify for event placement. Check the requirement in Seller Central well before the deadline.

Is a rising TACoS during a Prime event a bad sign?

Not always. If spend grows faster than sales, TACoS rises, but the added spend can still bring in several times its cost. Compare the extra sales with the extra spend before deciding the event was too expensive.

What if a deal badge does not show on my listing?

Report it to Amazon through Seller Central and keep your search ads running. Shoppers who search for the product can still find the deal price on the page, and ads at the top of search can carry sales while the badge is fixed.

Should I raise budgets on day two of a Prime event?

Often, yes. Many shoppers compare prices on day one and buy on day two. Watch which campaigns ran out of budget on day one and raise those first.

Are your shoppers waiting for a deal you are not ready to run?

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