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OpenClaw
Manus
Grok+17 agentsE-commerce Profit Leak Scanner
Finds hidden profit leaks and calculates contribution margin, break-even CAC, and ROAS from seller-provided data.
Free
E-commerce Profit Leak Scanner
Example session with this skill installed
I sell a gadget for $45 on Shopify. Product cost is $12 including inbound freight and packaging. I pay $8 outbound shipping, $10 advertising per acquired order, and 3% payment/platform fees. My refund rate is 5%, with an average $20 loss per refunded order. Price excludes tax retained for authorities. Scan for profit leaks.
- Read your context and instructions
- Compiled the e-commerce profit leak
Executive result
The product is contribution-positive but sensitive to advertising and shipping costs. This is not net profit because payroll, software, overhead, financing and income tax were not provided.
Data quality
Confirmed inputs: $45 selling price, $12 landed product cost, $8 seller-paid shipping, 3% transaction fees, $10 CAC, 5% refund rate and $20 loss per refund. No missing input blocks this unit-level estimate.
Per-order economics
| Metric | Amount |
|---|---|
| Selling price | $45.00 |
| Transaction fees | -$1.35 |
| Landed product cost | -$12.00 |
| Outbound shipping | -$8.00 |
| Expected refund loss | -$1.00 |
| Contribution before ads | $22.65 |
| Advertising CAC | -$10.00 |
| Contribution after ads | $12.65 |
| Contribution margin | 28.1% |
Top profit leaks
Advertising cost — high confidence. CAC consumes $1,000 per 100 acquired orders. Test a small creative or audience change and compare CAC without changing the full campaign.
2.
Seller-paid shipping — high confidence. Shipping consumes $800 per 100 orders. Compare carrier and packaging alternatives before changing the customer offer.
3.
Refund loss — medium confidence. Expected impact is $100 per 100 orders. Segment refund reasons before assuming the rate can be reduced.
Break-even limits
Break-even CAC is $22.65. Break-even ROAS is approximately 1.99x. With other inputs fixed, the maximum price reduction before contribution after ads reaches zero is $12.65, or 28.1%.
Next checks
- Confirm whether any Shopify subscription or app fees should be allocated per order.
- Segment CAC by channel and new versus returning customer.
- Compare the highest-volume SKU using the same inputs.
Add overhead or another SKU to extend the analysis.
Connects securely to your tools. The creator never sees your data.
About this skill
The problem
E-commerce sellers often lose margins to "hidden" costs like payment processing fees, shipping subsidies, and ad spend that aren't visible in simple revenue dashboards. Identifying exactly why a product is losing money requires complex unit economic modeling that is prone to manual error.
What it does
- Audits unit economics across Shopify, Amazon, and Etsy to identify specific profit leaks.
- Calculates contribution margins, break-even CAC, and ROAS thresholds based on real data.
- Models "what-if" scenarios for price changes, shipping subsidies, and ad spend adjustments.
- Ranks leaks by financial impact and confidence level using seller-provided inputs.
Why this beats prompting it yourself
General-purpose prompts often miss granular e-commerce variables like refund loss rates or currency conversion fees. This skill enforces a strict logic for landed costs and contribution margins, ensuring you never mistake gross profit for net income or ignore variable platform fees.
Use cases
- Conducting a pre-launch margin audit for a new SKU or product line.
- Diagnosing why a high-revenue listing is yielding zero actual cash flow.
- Calculating the maximum allowable ad spend before a campaign becomes loss-making.
- Evaluating the impact of offering "Free Shipping" on bottom-line profitability.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
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- 2
Unzip into your skills folder
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- 3
Ask your agent to use it
Restart the agent if it was already running. It picks the skill up automatically - no config needed.
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