Prime Day 2025 Results: A Reality Check for Amazon Sellers

Cameron Meneer
Jul 16
2 min read

Prime Day 2025 is officially in the books. While Amazon reported over $14 billion in total sales, early reports show a more complex story for individual sellers. Many third-party sellers saw sales down by as much as 40% year-over-year, challenging long-held assumptions about Prime Day as an automatic win.

Why the drop?

Shoppers are getting pickier

With inflation impacting household budgets, shoppers are more selective than ever. They’re prioritizing essentials and only the most compelling deals — no longer filling carts with "nice-to-have" items just because they’re discounted.

More competition than ever

Each year, more sellers flood Amazon with bigger budgets and steeper discounts, making it harder to stand out. This year, many sellers felt the squeeze, with higher CPCs and lower return on ad spend.

Rising ad costs

Many brands reported significantly higher advertising costs, which, paired with more cautious shoppers, pushed margins lower than expected.

Sellozo partner results: Profit-driven growth that beat the market

While many sellers saw flat or even negative sales trends this Prime Day, Sellozo partners bucked the trend — proving that a strategy-first, data-driven approach pays off even during a tough marketplace event.

Here’s what the numbers tell us:

👀 +25% increase in impressions — Partners achieved significantly higher visibility, a critical first step in driving sales. While other sellers struggled to stand out in the noise, Sellozo’s optimizations ensured their products were front and center.
📈 +29% sales growth compared to June daily averages — In contrast to the reported ~40% drop many sellers experienced, Sellozo partners not only avoided a decline but grew their sales substantially.
💰 +35% increase in ad spend — An intentional, controlled increase in ad investment that drove results, rather than wasted spend.
🔥 +8% improvement in conversion rates — Proving that more traffic isn’t enough; Sellozo partners converted better, turning clicks into actual orders.
⚖️ Average ACoS of 24% — Only slightly higher than June averages, highlighting efficient, profitability-focused ad management even on high-competition days.

Together, these results demonstrate that Sellozo partners didn’t just spend more — they spent smarter. By leveraging automated optimizations, advanced bid strategies, and detailed reporting, they were able to maintain profitability and gain market share when many sellers were simply trying to stay afloat.

In short: Sellozo partners didn’t just survive Prime Day — they won it.

Defining success before the event

The big takeaway? It’s more important than ever to define what success looks like before Prime Day hits. Whether that’s profit, inventory liquidation, new-to-brand customers, or market share growth, clear targets help you measure# results objectively and make better decisions next year.