Every Bol.com seller looks at the same screen every morning: the dashboard. Revenue, number of orders, maybe a smile when the graph tilts upward.
And every month, some sellers look at that same rising graph and still end up wondering where their margin went.
That gap between what the default dashboard shows you and what actually drives a healthy business is exactly what separates sellers who are busy from sellers who are growing. The top performers don’t have better luck. They don’t have a secret tool. They simply track different numbers.
This article is about those numbers.
The Default Dashboard Shows Activity, Not Health
Most marketplace dashboards are built to answer one question: "Is anything happening?"
They show you orders, clicks, sessions, and revenue. All useful. All incomplete.
Here’s the problem with measuring only activity:
- Revenue tells you how much you sold, not how much you kept.
- Orders tell you how busy you were, not how profitable you were.
- Sessions tell you how many people showed up, not how many should have bought.
A seller can watch all three numbers rise every month and still be quietly losing money on their best-selling product.
Top performers use the dashboard as a starting point, not a finish line. The numbers they actually run their business on are rarely displayed in the default view and that’s the point.
Product-Level Profitability Not Just Total Revenue
The single biggest shift serious sellers make is moving from "how much did we sell?" to "how much did we keep on each product?"
Total revenue is a comforting number because it’s big. But Bol.com fees, fulfilment costs, shipping, and returns all eat into it differently for every single product. A €40 product with a 2% return rate can be more profitable than a €60 product that gets returned 20% of the time.
A realistic (illustrative) example
Imagine two products in the same store:
| Metric | Product A | Product B |
|---|---|---|
| Selling price | €24.95 | €39.95 |
| Units sold / month | 300 | 180 |
| Monthly revenue | €7,485 | €7,191 |
| Return rate | 4% | 18% |
| Net margin after fees & returns | 19% | 6% |
| Monthly profit | ~€1,420 | ~€430 |
On the default dashboard, Product A and Product B look almost identical two products generating around €7k a month. One of them is worth more than three times the other.
Top sellers track contribution per product revenue minus fees, fulfilment, and return costs and make assortment, pricing, and advertising decisions from that number, not from the sales total.
Return Rates Per Product, Not Per Store
A store-wide return rate hides almost everything. An average of 6% could mean every product returns at 6%... or it could mean half your catalogue returns at 2% and one category returns at 25%.
The difference matters enormously, because returns are where margin quietly dies. Every returned item isn’t just a lost sale it’s lost shipping, often a restocking or refurbishment cost, and frequently a lost customer.
Top performers watch three things at the product level:
- Which products are returned most, and why (size, damage, misleading listing, quality).
- Whether the return rate is stable or drifting up a rising rate is an early warning.
- The true cost of a return for that specific product, not a generic "5% fee" assumption.
The fix is rarely "sell fewer of them." It’s usually "fix the listing, the sizing, the photos, or the supplier." But you can’t fix what you can’t see and a store-wide average hides it.
Buy Box Share and Price Position Over Time
The buy box is where the sale actually happens. Being the seller who wins it and staying there is a far better predictor of growth than any traffic metric.
But "did I win the buy box today?" is not a useful question. The useful question is "what has my buy box share been this week, and what changed when it dropped?"
Top sellers track:
- Buy box win rate across their catalogue.
- Price position relative to the competition not just "am I cheapest," but "am I priced within the range that wins?"
- The moments when share fell, and what happened right before it (a competitor’s price drop, a stock-out, a rating dip).
Pricing is rarely a one-time decision. It’s a continuous position. The sellers who grow are the ones who know when they lost position, and why.
The Long Tail: Which Products Earn Their Place
Most stores have a few products doing the heavy lifting and a much longer list that sells a little bit each. The long tail is where a lot of untapped value hides, but it’s also where a lot of effort and cash gets wasted.
Top performers regularly ask a blunt question about every product in the catalogue:
They separate products into a simple framework:
The goal isn’t to have the biggest catalogue. It’s to have a catalogue where every product is there on purpose, and you can prove it with numbers.
Conversion Signals, Not Just Traffic
Traffic is the most overrated number in the marketplace. Getting more sessions is only valuable if those sessions turn into sales.
The real lever is conversion and the signals that drive it:
- Product page conversion rate (sessions vs. orders per product).
- Review velocity and rating trends, especially after a listing change.
- Search position for the terms your buyers actually use.
- Cart-to-purchase behaviour, where price or delivery friction tends to show up.
A product getting 10,000 sessions at 1% conversion earns the same as a product getting 2,000 sessions at 5% but the second one is a far healthier business. Top sellers obsess over the rate, not the volume.
Stock and Fulfilment Health
Growth is impossible when you keep running out of stock and expensive when you’re drowning in it.
The numbers here are less glamorous than revenue, but they’re where real money is made and lost:
- Stock-out events per product every one is a lost sale and, worse, a lost buy box position that takes time to win back.
- Days of cover how long current stock will last at the current sales rate.
- Slow-moving inventory capital sitting on a shelf instead of working.
Top performers treat stock as a financial decision, not a warehouse decision. Every product holding too much stock is tying up money that could fund a better product.
What All of This Has in Common
Look back at the list. Not one of these metrics is exotic. Profitability, returns, buy box, assortment, conversion, stock every seller has heard of all of them.
The difference is where the data lives and how connected it is.
For most sellers, these numbers are scattered: revenue in the Bol.com dashboard, fees in a spreadsheet, returns in a downloaded report, stock in an inventory system, profit in the accountant’s files. Each system shows a slice. None of them shows the picture.
That’s why so many sellers fall back on the one number that’s easy to see total revenue even though they know it isn’t the number that matters.
This Is Where Menko Can Help
Menko doesn’t sell you a dashboard. Menko helps you build the connected data foundation underneath the decisions above.
In practice, that means:
- Bringing your marketplace data and your business data together Bol.com, inventory, finance, logistics so they’re no longer in separate silos.
- Building reliable reporting you can trust, instead of spreadsheets that are out of date by Friday.
- Making product-level performance visible profit, returns, and buy box per product, not per store.
- Comparing markets and products so you can see what’s actually worth growing.
- Turning raw data into decisions the "which product is actually profitable?" question answered in seconds, not a week.
Here’s the shift in practical terms.
That second question is unanswerable without connected data. And it’s the question every top-performing seller on this list asks every single week.
Menko is the team that helps you get there not by telling you what to sell, but by making sure you can finally see your own business clearly enough to decide.
The Numbers You Track Decide the Business You Build
There’s nothing wrong with watching revenue. It’s satisfying, it’s motivating, and it’s a genuine signal.
But revenue is a rear-view mirror. It tells you what already happened. The metrics in this article tell you why it happened and what to do next.
The sellers who grow aren’t the ones with the most data. They’re the ones who connected the data they already had, and started asking better questions with it.