Why Marketplace Revenue Can Grow While Profit Falls
The margin leak every marketplace seller faces — fees, RTO, returns and ads — and how to see true contribution margin.
#marketplace#margin#RTO#seller economics
The paradox
A seller’s revenue can grow 30% year-over-year while profit falls. It’s not unusual — it’s invisible margin leakage.
Where margin disappears
- Marketplace commissions — vary by category and platform (8–20%+)
- RTO (return to origin) — on COD orders, a failed delivery costs shipping both ways + reverse logistics
- Returns — product + packaging damage + restocking
- Advertising — sponsored placement spend inside the marketplace
- Reconciliation lag — payouts settle late, and the working capital cost is invisible
The blended-margin trap
Most sellers see one number: “profit = sales − cost.” That hides the truth:
Per-SKU net margin = Price − COGS − commission − RTO − shipping − ads − returnsA best-seller can be net-negative once RTO and ads are included — and the seller only discovers it quarterly, if ever.
What a Commerce OS reveals
- Per-SKU, per-marketplace contribution margin — live
- RTO rate by product and pincode — where returns really happen
- Ad spend vs attributable margin — not just ACoS
- Working capital — payout cycles and inventory funding
The fix isn’t selling more. It’s seeing which SKUs actually make money, and stopping the ones that don’t.
Running this problem today?
See where time and margin leak in your stack — mapped onto Mera Commerce OS.