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Amazon Fee Calculator
by
Elway Botty
· GitHub ↗
· v1.0.0
· MIT-0
271
Downloads
0
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0
Active Installs
1
Versions
Install in OpenClaw
/install amazon-fee-calculator
Description
Calculates precise Amazon FBA fees, storage, and profit margins for 2026, covering all size tiers and 20+ categories to determine real profitability.
README (SKILL.md)
Amazon FBA Fee Calculator — Know Your REAL Profit
Stop guessing. Know exactly what you'll make before you sell a single unit.
Description
Full FBA profitability calculator with 2026 fee schedule. Calculates referral fees, FBA fulfillment fees, storage costs, and net margin. Supports all size tiers and 20+ categories.
When to Use
- User wants to calculate Amazon FBA profitability
- User asks about Amazon fees, margins, or ROI
- User is evaluating whether to sell a product on Amazon
- User compares FBA vs FBM costs
- User mentions COGS, margin, or break-even price
Usage
# Basic: selling price + product cost
cd \x3Cskill_dir>/scripts && python3 calculator.py 24.99 5.00
# Full options
cd \x3Cskill_dir>/scripts && python3 calculator.py 9.95 2.00 --ship 0.50 --weight 8 --category grocery --units 200 --ppc 1.50
Options
--ship COST— Shipping cost to FBA per unit--weight OZ— Product weight in ounces--dims L W H— Dimensions in inches--category CAT— Product category (grocery, beauty, electronics, etc.)--units N— Monthly units sold (for projections)--ppc COST— PPC/advertising cost per unit
What It Calculates
- Referral fee (category-specific, with thresholds)
- FBA fulfillment fee (weight-based, by size tier)
- Monthly storage fee (per unit, seasonal rates)
- Total cost per unit
- Profit per unit, margin %, ROI %
- Monthly and annual profit projections
- Break-even selling price
No Dependencies
Pure Python 3. No pip install. No API keys. Works everywhere.
Usage Guidance
This skill appears to be a straightforward, local Python calculator. It does not request credentials or network access and prints results to stdout. Before installing/using: (1) inspect the included scripts (already provided) to confirm they match your expectations — the code here is visible and benign; (2) run it locally in a controlled environment (Python 3) if you want to verify outputs; (3) verify the fee schedule values against official Amazon documentation if you need regulatory/financial accuracy; and (4) be cautious installing packages from unknown authors in other cases — here the absence of downloads, env vars, and network calls reduces risk.
Capability Analysis
Type: OpenClaw Skill
Name: amazon-fee-calculator
Version: 1.0.0
The skill bundle is a legitimate Amazon FBA profitability calculator. The Python script (scripts/calculator.py) performs mathematical calculations based on hardcoded 2026 fee schedules and does not contain any network requests, file system modifications, or suspicious execution patterns. The instructions in SKILL.md are consistent with the tool's purpose and do not attempt to manipulate the AI agent into performing unauthorized actions.
Capability Assessment
Purpose & Capability
Name/description match the included assets: SKILL.md documents running scripts/calculator.py and the script implements referral, fulfillment, and storage fee calculations for FBA. No unrelated credentials, binaries, or services are requested.
Instruction Scope
Runtime instructions merely run the bundled Python script from the scripts directory with CLI options. The SKILL.md does not instruct the agent to read unrelated files, contact external endpoints, or exfiltrate data.
Install Mechanism
No install spec is provided (instruction-only plus a local script). Nothing is downloaded or written to disk beyond the included files, so there is no high-risk install step.
Credentials
The skill declares no required environment variables, credentials, or config paths. The script uses only standard-library modules and command-line arguments; no secrets are requested or accessed.
Persistence & Privilege
The skill does not request always:true or modify other skills or system configuration. It runs only when invoked by the user (user-invocable) and does not autonomously reach out to external services.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install amazon-fee-calculator - After installation, invoke the skill by name or use
/amazon-fee-calculator - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Amazon FBA Fee Calculator 1.0.0 — Initial Release
- Calculates Amazon referral fees, FBA fulfillment fees, storage costs, and net margin using the 2026 fee schedule.
- Supports all size tiers and 20+ product categories.
- Provides full profitability breakdown: profit per unit, margin %, ROI %, monthly/annual projections, and break-even price.
- Accepts options for shipping, weight, dimensions, category, PPC costs, and units sold.
- Easy command-line usage—requires only Python 3, no install or API keys needed.
Metadata
Frequently Asked Questions
What is Amazon Fee Calculator?
Calculates precise Amazon FBA fees, storage, and profit margins for 2026, covering all size tiers and 20+ categories to determine real profitability. It is an AI Agent Skill for Claude Code / OpenClaw, with 271 downloads so far.
How do I install Amazon Fee Calculator?
Run "/install amazon-fee-calculator" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Amazon Fee Calculator free?
Yes, Amazon Fee Calculator is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Amazon Fee Calculator support?
Amazon Fee Calculator is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Amazon Fee Calculator?
It is built and maintained by Elway Botty (@avmw2025); the current version is v1.0.0.
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