Prime Day Was a Blowout. Also a Warning.

Prime Day 2026 did $26.4 billion in US online sales, up 9.3% over last year. Day one alone did a record $8.3 billion. Every headline called it a blowout. The reality is that most people were focusing on the wrong number.

Here is the number they skipped. The average order fell from $53.34 to $47.66. Household spend dropped from about $156 to $143. Nearly 70% of everything sold went for under $20. The record total was not built on people buying more. It was built on more people buying less, one small careful order at a time. A shopper who used to fill a cart now buys the protein powder they were going to buy anyway and closes the tab.

Traffic is not your problem anymore. The traffic showed up. Basket size is your problem. When the same revenue arrives in smaller orders, your ad spend works harder for less, and your margin quietly gets thinner while your top line looks great. You can post a record Prime Day and be worse off than last year and most brands will not notice until they check contribution margin by ASIN instead of the celebration screenshot.

So treat this like the dress rehearsal it is. The person who bought carefully in June is the same person walking into Black Friday and they are not loosening up between now and then.

The brands that win Q4 are the ones fixing average order value now, with bundles, thresholds, and a real reason to add the second item, all while everyone else is still admiring their Prime Day revenue.

The record Amazon Prime Day revenue number was never the point. The number in the basket always is.

In this week’s issue:

Marketplace Madness: Walmart x Vibe, Amazon NSP, TikTok AI
Seller Central Updates: Canvas
Twitter/X Spotlight: Tools vs Agents

Marketplace Madness

1/ Walmart Buys Vibe.co For $1.4 Billion

Walmart is buying Vibe.co, a self-serve connected TV ad platform, for $1.4 billion as part of a broader push to make its advertising business more unified and performance-driven. The move brings Walmart Connect, its international ad business, and Sam’s Club’s ad network closer together, while giving brands of all sizes a way to run streaming TV ads and measure whether those ads actually drove sales using Walmart’s shopper data.

Why it matters:

Walmart is trying to make its ad platform feel more like a full performance marketing channel, not just sponsored placements on Walmart.com. This is another sign that retail media is becoming a multi-channel game. If Walmart can make TV-style ads measurable and accessible for smaller brands, sellers may need to think beyond Amazon ads alone, especially if they sell on Walmart or are trying to defend share against competitors who do.

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2/ Amazon Makes New Product Launches Cheaper for FBA Sellers

Amazon is expanding its New Selection Program starting July 30, 2026, giving sellers more credits and fee breaks when they launch new FBA products. Eligible new ASINs can get credits on the first 200 units, help with referral and fulfillment costs, coupon and Vine credits, plus benefits like free storage, free returns, free liquidations, and relief from certain inventory fees. Sellers using Vine Pre-Launch can also get an extra 45 days of benefits.

Why it matters:

Launching new products on Amazon is expensive before you know whether the product will work. These changes reduce some of that early risk, especially around storage, fulfillment, reviews, and promotions. If you are testing new SKUs, this makes it easier to launch faster, gather signal earlier, and avoid getting punished too quickly by upfront FBA costs.

3/ TikTok Adds AI Tools to Help Brands Create Ads Faster

TikTok is adding new AI features to its Symphony Creative Studio that can help marketers create video campaigns from text prompts, images, or examples of trending TikTok ads. Its new Symphony Agent can suggest creative ideas based on what is already performing well in the app, generate video concepts from scratch, create image assets, translate and dub videos, and even help with creator briefs and creator discovery.

Why it matters:

This makes TikTok easier to test without needing a full creative team or constant video production. The real opportunity is faster iteration: sellers can spot what styles are working, generate ad concepts quickly, and test more hooks before putting serious spend behind a campaign. The risk is that AI-generated ads may start to feel generic, so the brands that pair these tools with real product insight and authentic customer angles will still have the advantage.

Seller Central Update of the Week

Amazon added a new tool called Canvas to the updated Seller Central experience, and it changes how sellers pull answers from their own data. Type a plain-English question about sales, ads, or account health, and Canvas responds with charts, trend lines, and suggested next steps. You can keep asking follow-ups in the same thread instead of bouncing between reports.