Why Single-Channel P&L Isn't Enough
If you sell on Amazon AND Walmart AND TikTok Shop, your P&L tools need to show you a unified view. Switching between three separate dashboards means you're never looking at the full picture.
Fee Differences by Marketplace
| Fee | Amazon (FBA) | Walmart (WFS) | TikTok Shop |
|---|---|---|---|
| Fulfillment | $3.06–$20+ | $3.00–$18+ | Seller ships |
| Referral | 8–20% | 8–15% | 5–8% |
| Storage (mo) | $0.78/cu ft | $0.75/cu ft | N/A |
| Return processing | $0–$5 | $0.75–$2 | Varies |
How niche.ltd Cross-Marketplace P&L Works
- Connect all your store accounts (Amazon SP-API, Walmart Seller API)
- Go to Cross-Marketplace P&L in the sidebar
- See total revenue, costs and net profit per channel side by side
- Drill down to SKU level across channels
When a Product Earns More on Walmart
Products with lower price points often earn better margins on Walmart because:
- Walmart's referral fees cap at 15% (Amazon can be 20%+ for jewelry)
- Walmart Fulfillment Services fees are slightly lower on small items
- Competition is thinner — fewer sellers bidding on PPC
TikTok Shop P&L Specifics
TikTok Shop margins look better on paper because there's no FBA-equivalent fee — you ship directly to the buyer. But factor in:
- Per-order shipping cost (often $3–$8 for small items)
- Higher return rates (TikTok buyers are more impulse-driven)
- Creator commission (5–30% if using affiliate creators)
Setting Your Expansion Threshold
Before listing on a new marketplace, your break-even analysis should show at least 2% net margin advantage over your current channel — otherwise the operational overhead isn't worth it.