Know whether a product makes money before you order stock
Enter one ASIN. Keble studies dozens to a hundred-plus comparable products, works out net profit per unit at your cost, and gives a verdict with its evidence.
- No store to connect
- Keble accounts are invite-only for now
- Every margin opens its calculation
- Usually about 10-15 minutes
- Net margin at your cost
- 6.8–27.4%
- New-listing success
- 23.5%
- Startup budget
- $12k–$20k
Steady demand, with room for new entrants.
See how this verdict was reached ↓What the research tool shows is not what you keep
- What you saw1,070 sold a month at $39.85
- What you find out after ordering
- FBA −$7.97
- Referral −$5.98
- Ads −$7.17
- First leg −$1.10
- Sourcing −$7.85
- What you keepa unit $9.78 · 24.5%
Others give you a score. Keble shows its working.
- 01The verdictWorth entering
- 02The key metricsEntry successMidNew listings34New-listing success23.5%Net margin range6.8–27.4%
- 03The products behind itDEMO-0021$39.8524.54%
- 04That row's calculation$39.85 price − $21.12 fees and ads − $1.10 first leg − $7.85 your cost = $9.78
Reason: too few comparable products
Behind the verdict: the chapters that back it
9 Amazon marketplaces · report in the language you pick · save as PDF
| Product | Price | Sales / mo | Net · sea |
|---|---|---|---|
| DEMO-0001 | $32.99 | 1,480 | 27.40% |
| DEMO-0021 | $39.85 | 1,070 | 24.54% |
| DEMO-0013 | $23.74 | 1,630 | 23.38% |
| DEMO-0024 | $35.06 | 960 | 23.05% |
| DEMO-0015 | $36.10 | 1,700 | 22.31% |
No store to connect, and your cost stays yours
- Nothing to connect
It uses only the ASIN, marketplace, keywords and cost you enter; it never reads or changes your store.
- Only you see your cost
Share a report and the link hides your cost and every profit figure.
Questions
Can I trust the verdict?
It says worth or not worth entering only when the evidence supports it. With too few comparable products, an unresolved cost or conflicting evidence, it says it cannot decide.
What if I don't know my exact cost?
Use Keble's estimate once you agree to it. When the factory quote arrives, change the cost and every number is recomputed into a new version.
Which marketplaces and languages?
Amazon US, UK, DE, FR, IT, ES, JP, MX and CA. You pick the report language when you create it.
How is it charged?
Each report counts as 5 requests in your plan. The pricing page lists each plan's requests.
Next product: see the verdict before you order
- No store to connect
- Keble accounts are invite-only for now
Use it from your own AI Agent
Use the Keble MCP tools to create an Amazon product report (kind AMZ_PRODUCT_REPORT). First call artifect_describe with {"request":{"kind":"AMZ_PRODUCT_REPORT"}} to read its fields. Then call artifect_create with kind AMZ_PRODUCT_REPORT, asin B0EXAMPLE1 (replace it with my ASIN), amazonMarketplace US, keywords ["desk humidifier"], a new replayKey, and purchaseCost. Ask me for the cost before you create it: my own per-unit cost as {"source":"USER_SUPPLIED","value":<my amount and currency>}, or Keble's estimate as {"source":"SYSTEM_ESTIMATED","sellerAgreed":true} only after I agree. Follow the run with artifect_status. When the report asks a confirmation question (keywords, category or cost), show it to me and send my answer with artifect_answer. When it finishes, tell me the verdict, the net margin range and the biggest risk.