Multi-platform Commission Compare
In one line: See net profit on the same SKU across Amazon, Walmart, Newegg, eBay, and TikTok Shop side by side, and find where it sells best.
When to use
- Deciding which marketplace to list a new SKU on first
- Reallocating inventory toward the most profitable channel
- Negotiating price by category when fee structures differ
Inputs
| Field | Notes |
|---|---|
| Selling price | Planned listing price (kept constant across platforms for a fair comparison) |
| Category | Drives the commission rate, which varies by platform and category |
| Unit cost | Procurement plus shipping and packaging allocated per unit |
Outputs
- Net profit per platform — after each platform's category commission
- Effective fee rate — commission as a share of selling price, per platform
- Best-platform suggestion — the channel with the highest net profit for this SKU
Steps
- Open https://www.niceggie.com/tools/platform-fee-compare
- Enter selling price, category, and unit cost
- Net profit for Amazon, Walmart, Newegg, eBay, and TikTok Shop updates instantly
- Read the best-platform suggestion and list accordingly
Headline rate is not the full cost
A platform advertising an "8% commission" can still cost more than a 12% rival once fulfillment, payment processing, and ad requirements are added. Compare net profit, not the headline commission — a 2–4 point swing in effective fee can flip which channel wins.
FAQ
Why does the best platform change when I change the category?
Commission rates are set per category, not per platform overall. Electronics, apparel, and beauty can each carry different rates on the same marketplace, so the lowest-fee channel for one SKU may be the most expensive for another. Always compare at the category level.
Should I list on the single best platform only?
Not necessarily. Listing on the top one or two by net profit captures most of the upside while limiting operational overhead. Adding low-margin channels can still be worth it for volume, brand reach, or to diversify away from a single platform's policy risk.
Pair with
- Real profit after all fees → Profit Calculator
- Minimum units to not lose money → Breakeven Calculator