Numerator tracked Prime Day 2026 in real time, and their final snapshot, based on 178,787 Prime Day orders, 59,400 households, 351,055 items reviewed, and 5,002 brands reviewed, is worth reading if you sell on Amazon. You can find the full report at numerator.com. Here are the metrics that stand out most for brand sellers.
Shoppers Spent Less Per Household
Numerator's data shows average order size holding in the mid-$50s range, with multiple orders per household across the event. Separately, Numerator's mid-event press release found per-household spend was down roughly 16% compared to the same point in 2025, with average order value down 18%, suggesting shoppers placed fewer and smaller orders overall. That pattern is consistent with what we saw in the Adobe Analytics data: Prime Day 2026 attracted a more decisive, less exploratory shopper who came for specific items and left.
The average price per item was $23.23. That's a mass-market number. If your brand plays at a higher price point, Prime Day is less a "sell everything" event and more a "acquire customers at a lower CAC than usual" event.
What People Bought
The top five items by volume were Premier Protein Shakes, Liquid I.V. Packets, Temptations Cat Treats, a Glade PowerWash Spray, and Hefty Ultra Strong Trash Bags. Consumables, pet treats, and household staples. Three of the five are subscribe-and-save natural fits, which is worth noting: Prime Day is a strong driver of first-time trials for recurring-purchase products.
By category, Kitchen and Dining led, followed by Health and Beauty, Electronics, Household Supplies, and Apparel. The product type breakdown is the most seller-relevant number in the whole report: 45% of purchases were items shoppers had never bought before on Amazon. Another 36% were items they'd bought before but not regularly, 32% were regulars, and 26% were items they'd been waiting to discount-buy.
Nearly half of Prime Day volume is trial purchases, not replenishment. If you're not showing up as a discoverable option for new-to-brand shoppers, you're missing the biggest slice of the event.
Who Was Shopping
The Prime Day shopper skewed female, was most heavily represented in the 35-44 age bracket, and leaned higher income. Urban and suburban shoppers dominated, and 89% of Prime Day shoppers said they planned to shop the event before it started. They had lists, not impulses.
93% of Prime Day shoppers have shopped the event for five or more years. That's a very experienced base who know how it works and know how to comparison shop. Product quality signals, reviews, ratings, and content quality matter more than novelty deals for this audience.
The Comparison Shopping Problem
Nearly half of Prime Day shoppers reported shopping or planning to shop other retailers during Prime Day week. Amazon is no longer the automatic first and last stop for deal-seekers, and that trend has been building for several years.
Over half of shoppers reported high satisfaction with the deals they found. And 49% said they plan to shop Amazon's fall sale event, which means Prime Day is increasingly functioning as an entry point into Amazon's broader promotional calendar rather than a standalone peak. Brands that treat Prime Day as a one-off are probably leaving retention opportunity on the table.
What to Take Away
Three things stand out from the Numerator data. First, the trial-purchase number: 45% of Prime Day items were never-before-purchased on Amazon. That's the clearest argument for investing in discoverability for new-to-brand shoppers, not just conversion for existing customers.
Second, the planned-shopper stat: 89% came in with intent. You don't convert them with clever ad copy at the moment of decision. You convert them in the days before the event, when they're building their lists and doing research. Your listing quality and content is doing that work, not your Prime Day bid strategy.
Third, the average item price of $23.23 and the household spend decline together suggest that Prime Day is becoming a high-velocity, lower-margin event for commodity categories, and a customer acquisition event for everything else. Knowing which type of event it is for your specific products is the most important strategic question going into next year's planning.
If you want to work through what the Prime Day data means for your catalog positioning and how to use the post-event window to optimize before the next major sale cycle, we're happy to dig in. Schedule a call and let's look at your numbers together.