Profit Margin Calculator Walmart

Walmart profit margin calculator for sellers. Calculate cost breakdowns including WFS fulfillment, storage fees, and referral fees. Includes comparison with...

Security Scan

The skill claims to be a Walmart WFS profit calculator but the bundled code and usage examples are inconsistent with that purpose (Amazon-focused variable names, Amazon referral rates, mismatched parameter names), so it may not behave as advertised and should be inspected before use.

Purpose & Capability

The skill name and SKILL.md say 'Walmart' / WFS, yet the included Python file is titled 'Amazon Profit Calculator' and uses Amazon-specific concepts and constants: REFERRAL_FEE_RATES that match Amazon category rates, variables named fba_fulfillment_fee and fba_storage_fee, and FBA_FULFILLMENT_FEES. The SKILL.md claims Walmart comparison, but the primary implementation appears Amazon-centric. Additionally the skill source/homepage are unknown, which increases the need for scrutiny.

Instruction Scope

SKILL.md instructs running the script with a JSON including 'wfs_fee' (example) but the visible code expects fields named like fba_fulfillment_fee / fba_storage_fee and category/referral logic for Amazon. This mismatch will likely cause runtime errors or incorrect calculations. The instructions do not tell the user to validate inputs or warn that the engine is Amazon-oriented. Otherwise, instructions do not request unrelated files or environment variables.

Install Mechanism

There is no install spec in the registry entry and the skill is effectively instruction + a local Python script. The SKILL.md shows an npx command to add the skill (user-facing instruction), but nothing in the package forces downloads or executes installers automatically. This is a low-risk install posture in itself.

Credentials

The skill declares no required environment variables, no credentials, and the visible code does not access environment variables or external secrets. Requested surface for credentials is proportionate (none).

Persistence & Privilege

The skill is not marked always:true, is user-invocable, and does not request elevated persistence or modify other skill/system configs. Autonomous invocation is allowed by default but is not combined with other high-risk flags here.

What to consider before installing

Key things to consider before installing or running this skill: - Do not run the script on production or with sensitive data until you verify it. Run it in a sandbox/container first. - The SKILL.md advertises a Walmart/WFS calculator, but the bundled Python is Amazon-focused (FBA terminology and Amazon referral rates). This likely produces incorrect results for Walmart sellers. Ask the author for clarification or an updated implementation that explicitly supports WFS and uses Walmart fee rules. - The usage example passes 'wfs_fee' but the code appears to expect fields like 'fba_fulfillment_fee' / 'fba_storage_fee' — fix or map input field names before use to avoid runtime errors or silent miscalculations. - Because the package source and homepage are unknown, inspect the full Python file (including the truncated portion) for any network calls or subprocess usage before execution. Search the script for imports or functions that indicate external communication (requests, urllib, socket, subprocess, os.system, ftplib, smtplib) or for hard-coded endpoints. - If you only need Walmart calculations, consider either obtaining a version explicitly designed for WFS or adapting this engine: replace Amazon referral rates with Walmart rates, rename/mapping of fee fields, and verify formulas. If you want, I can (a) search the remaining/truncated part of the script for network I/O or dangerous patterns, (b) produce a patch mapping 'wfs_fee' -> 'fba_fulfillment_fee' and replace Amazon referral rate table with a Walmart-appropriate table, or (c) draft questions to send to the skill author to get a clear claim of supported marketplaces.

Calculate product profitability for Walmart Marketplace sellers — cost breakdowns, profit margins, and WFS fee analysis.

Installation

npx skills add nexscope-ai/eCommerce-Skills --skill profit-margin-calculator-walmart -g

Cost Components

Cost Item	Description
Product Cost	FOB purchase price
Inbound Shipping	Sea/air freight to WFS
WFS Fulfillment	Walmart Fulfillment Services
WFS Storage	Monthly storage fee
Referral Fee	Platform commission (8-15%)
Advertising	Walmart Connect ads
Return Cost	Return processing loss

Walmart vs Amazon

Item	Walmart	Amazon
Fulfillment	WFS	FBA
Referral fee	Lower	Higher
Monthly storage	No fee	Yes
Competition	Lower	High

Usage

python3 scripts/calculator.py

python3 scripts/calculator.py '{"selling_price": 24.99, "product_cost": 6, "wfs_fee": 4.95}'

Output Example

💰 **Walmart Profit Analysis Report**

Selling Price         $24.99   100.0%
────────────────────────────────────────
Product Cost          -$6.00    24.0%
WFS Fulfillment       -$4.95    19.8%
Referral Fee          -$3.75    15.0%
...
────────────────────────────────────────
Net Profit            $6.19    24.8%

Walmart Advantages

Advantage	Benefit
No long-term storage	Better for slow movers
Lower referral fees	6-15% vs 8-15%
Less competition	Easier ranking
Growing marketplace	More opportunities

Referral Fee Rates

Category	Rate
Electronics	8%
Apparel	15%
Home & Kitchen	15%
Most categories	8-15%

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Part of Nexscope AI — AI tools for e-commerce sellers.