3 Amazon Metrics You Should Actually Care About

Cut Through the Noise: The Metrics That Truly Matter on Amazon

Ever feel like you’re wading through an endless sea of data on Amazon? It’s easy to get lost in page views, buy-box wins, PPC impressions… until you realize you don’t actually know what’s making you money. Here’s your GPS: three metrics that really matter, and how SellerPulse helps you keep your head above water.

1. Net Profit Margin (Your Real-World Health Check)

When it comes to selling on Amazon, net profit margin is the number that cuts through all the noise. Among the most important Amazon seller metrics to track, net profit margin stands out—it’s not about clicks, impressions, or even sales volume; it’s about what you actually keep after Amazon fees, ads, shipping, storage, and the rest.

And here’s the reality check: 57% of Amazon sellers maintain margins above 10%, but only 28% achieve margins of 20% or higher (Red Stag Fulfillment). That means nearly half of all sellers are operating with razor-thin margins, or none at all. If you’re not tracking net margin closely, you’re flying blind in a marketplace where profitability is the ultimate differentiator.

How SellerPulse Helps:

SellerPulse makes margin tracking effortless by automatically pulling in Amazon fees, ad spend, and costs, then mapping them against your sales. Instead of juggling spreadsheets or waiting for monthly reports, you see weekly profitability at both the account and SKU level. Even better, SellerPulse flags margin dips the moment they happen so you can tweak prices, cut ad spend, or investigate cost spikes before they erode your profits.

2. Inventory Turnover Rate (Stop Stockroom Sob Stories)

Your inventory is your lifeline, but it can also be your biggest money pit. Too much stock sitting idle means cash locked up and rising storage fees. Too little stock and you’re out of the Buy Box before you can say “Prime Day.” Amazon sellers know this all too well: in fact, inventory management consistently ranks among the top three operational challenges for FBA sellers (Jungle Scout, 2024). *You'll need to download the PDF from here to see the detailed breakdown of challenges.

How SellerPulse Helps:

SellerPulse takes the guesswork out of inventory performance by tracking turnover rate and flagging SKUs that are moving too slowly, or selling out too quickly. You’ll get alerts for overstocks that are quietly draining your margins with storage fees, and low-stock warnings that prevent lost sales opportunities. With real-time visibility into your inventory health, you can make smarter reorder decisions and keep your cash flowing instead of gathering dust in Amazon’s warehouses.

3. Advertising ACoS (Ad Cost of Sales)—Know When to Hit Cruise Control

Advertising can fuel growth, or burn money fast. That’s why monitoring ACoS (Advertising Cost of Sales) is so critical. According to Jungle Scout (2020), 42% of Amazon sellers say managing PPC campaigns is one of their most time-consuming tasks. Without clear visibility, it’s easy to overspend and wipe out your profits chasing clicks that don’t convert.

How SellerPulse Helps:

SellerPulse connects your ad spend directly to your product performance, showing you exactly how much each campaign is costing, and whether it’s making you money. Profit-adjusted ACoS metrics mean you see the true picture, not just surface-level ad data. On top of that, SellerPulse sends alerts when ACoS spikes, so you can pause or adjust campaigns before they drain your budget. The result? More profitable ad spend without the constant spreadsheet stress.

Wrap Up: Focus on What Moves the Needle

So there you go: track Net Profit Margin, Inventory Turnover, and Advertising ACoS, and you’ll finally know which numbers to care about.

Smarter Selling Starts With SellerPulse

Amazon throws a lot at you… fees, ads, inventory shifts, marketplace quirks, etc., but when you zoom in on the right numbers, you gain clarity and control. That’s exactly where SellerPulse shines.

With real-time alerts, profit-driven dashboards, and clear insights into your net margins, ad performance, and inventory flow, SellerPulse doesn’t just show you the data, it tells you what it means and how to act on it. No more guessing, no more endless spreadsheets, and definitely no more “I wish I had known sooner.”

At eComEngine, our commitment has always been simple: help Amazon sellers be as profitable as possible. SellerPulse is the next step in that mission- a tool built to make sense of your numbers so you can make smarter decisions, faster.

So if you’re ready to stop drowning in data and start steering with confidence, focus on the Amazon seller metrics to track that matter most—and there’s one easy move left: