nexscope-ai/amazon-skills/amazon-shipping-calculator

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Amazon FBA and FBM shipping cost calculator and fulfillment optimization. Dimensional weight analysis, storage fee calculation, removal cost estimation, and fulfillment method comparison. Use when the user asks about Amazon shipping costs, FBA fees, fulfillment costs, storage fees, or shipping calculations.

Install

npx vskill@latest install nexscope-ai/amazon-skills/amazon-shipping-calculator

SKILL.md

Amazon Shipping Calculator 📦

Comprehensive FBA and FBM cost calculator. Optimize fulfillment strategy and minimize shipping expenses.

Installation

bash
npx skills add nexscope-ai/Amazon-Skills --skill amazon-shipping-calculator -g

Usage Examples

FBA cost analysis:

"Calculate FBA costs for my 12x8x4 inch product weighing 2.5 lbs - is FBA profitable vs self-fulfillment?"

Dimensional weight optimization:

"My product dimensions are 15x12x8 inches but only weighs 3 lbs - how can I optimize packaging to reduce FBA fees?"

Storage fee planning:

"I have 500 units in FBA storage for 8 months - what are my storage costs and when should I remove inventory?"

Core Capabilities

1. FBA Cost Calculation & Analysis
  • Complete FBA fee breakdown including fulfillment, storage, and additional service fees
  • Dimensional weight analysis and packaging optimization recommendations
  • Size tier determination and fee structure optimization strategies
  • Multi-marketplace fee comparison and cost optimization across regions
2. FBM vs FBA Comparison & Strategy
  • Comprehensive cost comparison between FBA and self-fulfillment options
  • Break-even analysis and profitability assessment for each fulfillment method
  • Hybrid fulfillment strategy development and product-specific recommendations
  • Geographic and seasonal fulfillment optimization strategies
3. Storage Management & Optimization
  • Storage fee calculation and long-term storage cost analysis
  • Inventory aging tracking and removal cost planning
  • Seasonal storage optimization and capacity planning strategies
  • Inventory performance index (IPI) impact analysis and improvement recommendations

How It Works

Step 1: Cost Analysis & Fee Calculation

Comprehensive fulfillment cost breakdown and fee analysis

Calculate complete fulfillment costs and fee structures:

  • Analyze product dimensions, weight, and packaging to determine accurate FBA size tiers and fees
  • Calculate all FBA costs including fulfillment fees, monthly storage, long-term storage, and removal fees
  • Compare FBA costs against self-fulfillment expenses including packaging, shipping, labor, and overhead costs
  • Evaluate multi-marketplace fulfillment costs and identify optimization opportunities across regions
Step 2: Optimization Strategy Development

Packaging and fulfillment method optimization for cost reduction

Develop cost optimization strategies:

  • Identify packaging optimization opportunities to reduce size tiers and dimensional weight charges
  • Analyze product portfolio for optimal fulfillment method selection (FBA vs FBM vs hybrid)
  • Calculate break-even points and ROI for different fulfillment strategies and volume scenarios
  • Develop seasonal and geographic fulfillment strategies to minimize costs and maximize efficiency
Step 3: Implementation & Monitoring

Strategic fulfillment execution and ongoing cost management

Implement optimized fulfillment strategy:

  • Execute packaging changes and fulfillment method transitions based on cost analysis and strategic objectives
  • Monitor storage levels and implement inventory management strategies to minimize long-term storage fees
  • Track fulfillment performance and costs to identify ongoing optimization opportunities
  • Establish automated monitoring and alert systems for cost management and strategic adjustments

Output Format

## Amazon Shipping & Fulfillment Cost Analysis
**Product:** [Product Name] | **ASIN:** [ASIN] | **Analysis Date:** [Date] | **Marketplace:** [US/UK/DE/etc]
 
### Product Specifications & Size Tier Analysis
 
**Physical Dimensions:**
- **Product Dimensions:** [L] x [W] x [H] inches
- **Product Weight:** [X.X] lbs (actual weight)
- **Packaging Dimensions:** [L] x [W] x [H] inches (with Amazon packaging)
- **Dimensional Weight:** [X.X] lbs (L×W×H ÷ 139)
- **Billable Weight:** [X.X] lbs (higher of actual or dimensional)
 
**FBA Size Tier Classification:**
- **Current Tier:** [Small Standard/Large Standard/Small Oversize/Medium Oversize/Large Oversize/Special Oversize]
- **Tier Factors:** [Based on dimensions, weight, and category]
- **Fee Structure:** [Fees applicable to this size tier]
 
**Dimensional Weight Optimization:**
- **Current DIM Weight:** [X.X] lbs
- **Optimization Potential:** [Y.Y] lbs savings possible
- **Recommended Actions:** [Specific packaging changes to reduce tier]
- **Potential Savings:** $[X.XX] per unit reduction in fulfillment fees
 
### Complete FBA Cost Breakdown
 
**Fulfillment Fees (Per Unit):**
| Fee Component | Current Cost | Optimized Cost | Savings Opportunity |
|---------------|--------------|----------------|-------------------|
| Pick & Pack | $[X.XX] | $[X.XX] | $[X.XX] |
| Weight Handling | $[X.XX] | $[X.XX] | $[X.XX] |
| **Total Fulfillment Fee** | **$[X.XX]** | **$[X.XX]** | **$[X.XX]** |
 
**Storage Fees (Monthly):**
- **Standard Size Storage:** $[X.XX] per cubic foot per month (Jan-Sep: $0.87, Oct-Dec: $2.40)
- **Oversize Storage:** $[X.XX] per cubic foot per month (Jan-Sep: $1.20, Oct-Dec: $2.40)
- **Your Product Volume:** [X.XX] cubic feet per unit
- **Monthly Storage Cost:** $[X.XX] per unit per month
- **Annual Storage Cost Range:** $[X.XX] - $[Y.YY] per unit (seasonal variation)
 
**Long-term Storage Fees:**
- **6+ Months:** $[X.XX] per cubic foot (assessed monthly)
- **12+ Months:** $[X.XX] per cubic foot (assessed monthly)  
- **Your Risk:** $[X.XX] per unit if stored 6+ months
- **Removal Threshold:** Consider removal after [X] months to avoid fees
 
**Additional FBA Fees:**
- **Removal Fee:** $[X.XX] per unit (if removing from FBA)
- **Disposal Fee:** $[X.XX] per unit (if disposing via Amazon)
- **Return Processing:** $[X.XX] per unit for customer returns
- **Prep Service:** $[X.XX] per unit (if using FBA prep services)
- **Labeling:** $[X.XX] per unit (if using FBA labeling)
 
### FBM (Self-Fulfillment) Cost Analysis
 
**Shipping Cost Breakdown:**
| Shipping Method | Zone 1-4 | Zone 5-6 | Zone 7-8 | Average |
|-----------------|----------|----------|----------|---------|
| USPS Ground Advantage | $[X.XX] | $[Y.YY] | $[Z.ZZ] | $[X.XX] |
| UPS Ground | $[X.XX] | $[Y.YY] | $[Z.ZZ] | $[X.XX] |
| FedEx Ground | $[X.XX] | $[Y.YY] | $[Z.ZZ] | $[X.XX] |
| **Recommended:** [Service] | **$[X.XX]** | **$[Y.YY]** | **$[Z.ZZ]** | **$[X.XX]** |
 
**FBM Operating Costs (Per Unit):**
- **Packaging Materials:** $[X.XX] (box, tape, labels, inserts)
- **Labor Cost:** $[X.XX] ([Y] minutes @ $[Z]/hour)
- **Overhead Allocation:** $[X.XX] (warehouse, utilities, insurance)
- **Average Shipping:** $[X.XX] (weighted by geographic distribution)
- **Return Handling:** $[X.XX] (estimated cost for returns processing)
- ****Total FBM Cost:** **$[X.XX] per unit**
 
### Cost Comparison & Break-Even Analysis
 
**Fulfillment Method Comparison:**
| Cost Component | FBA | FBM | Difference |
|----------------|-----|-----|------------|
| Fulfillment/Shipping | $[X.XX] | $[Y.YY] | $[±Z.ZZ] |
| Storage (Monthly) | $[X.XX] | $[Y.YY] | $[±Z.ZZ] |
| Labor & Overhead | $0.00 | $[Y.YY] | $[±Z.ZZ] |
| Prime Eligibility | Included | Extra Cost | $[Z.ZZ] |
| **Total Cost/Unit** | **$[X.XX]** | **$[Y.YY]** | **$[±Z.ZZ]** |
 
**Break-Even Analysis:**
- **FBA Advantage:** $[X.XX] savings per unit (or disadvantage)
- **Volume Break-Even:** [X] units/month where costs equalize
- **Time Break-Even:** [X] months storage where FBM becomes cheaper
- **Seasonal Impact:** FBA costs increase [X]% in Q4 vs Q1-Q3
 
**Profitability Impact:**

Example Unit Economics (Product selling at $[XX.XX]): FBA FBM Difference Selling Price: $[XX.XX] $[XX.XX] - Amazon Referral: $[X.XX] $[X.XX] - Fulfillment Cost: $[X.XX] $[Y.YY] $[±Z.ZZ] COGS: $[X.XX] $[X.XX] - Net Profit: $[X.XX] $[Y.YY] $[±Z.ZZ] Margin: [XX]% [YY]% [±Z]%

 
### Storage Optimization Strategy
 
**Current Storage Analysis:**
- **Units in Storage:** [X] units
- **Storage Duration:** [Y] months average
- **Monthly Storage Cost:** $[X.XX] total
- **Aging Inventory Risk:** [Y] units approaching 6+ month threshold
 
**Inventory Aging Breakdown:**
| Age Range | Units | Storage Cost/Month | Long-term Fee Risk | Action Required |
|-----------|-------|-------------------|-------------------|-----------------|
| 0-3 months | [X] | $[Y.YY] | None | Monitor |
| 3-6 months | [X] | $[Y.YY] | Low | Review velocity |
| 6-12 months | [X] | $[Y.YY] | $[Z.ZZ]/month | Consider removal |
| 12+ months | [X] | $[Y.YY] | $[Z.ZZ]/month | **Remove immediately** |
 
**Storage Cost Optimization:**
- **Right-sizing Inventory:** Maintain [X]-month supply to minimize storage
- **Seasonal Planning:** Reduce inventory before Q4 storage fee increases
- **Removal Triggers:** Remove inventory at [X] months to avoid long-term fees
- **Velocity Optimization:** Focus on faster-moving SKUs for FBA storage
 
### Multi-Marketplace Cost Comparison
 
**FBA Fees by Marketplace:**
| Marketplace | Fulfillment Fee | Storage Fee | Currency | Local Equivalent |
|-------------|-----------------|-------------|----------|------------------|
| US | $[X.XX] | $[Y.YY]/cu ft | USD | Baseline |
| CA | CAD [X.XX] | CAD [Y.YY]/cu ft | CAD | [Z]% vs US |
| UK | £[X.XX] | £[Y.YY]/cu ft | GBP | [Z]% vs US |
| DE | €[X.XX] | €[Y.YY]/cu ft | EUR | [Z]% vs US |
| JP | ¥[X.XX] | ¥[Y.YY]/cu ft | JPY | [Z]% vs US |
 
**Cross-Border Shipping Analysis:**
- **Inbound Shipping Costs:** $[X.XX] per unit to each marketplace
- **Duty & Import Fees:** [Y]% of product value + $[Z.ZZ] processing
- **Total Landed Cost:** $[X.XX] per unit (including all fees)
- **Break-even Volume:** [X] units/month to justify separate FBA inventory
 
### Packaging Optimization Recommendations
 
**Current Packaging Analysis:**
- **Package Efficiency:** [X]% (product volume ÷ package volume)
- **Wasted Space:** [Y.Y] cubic inches per unit
- **Optimization Potential:** [High/Medium/Low] based on current packaging
 
**Recommended Optimizations:**
 
**Option 1: Dimension Reduction**
- **Current:** [L] x [W] x [H] inches → **Optimized:** [L] x [W] x [H] inches
- **Size Tier Impact:** [Current Tier] → [New Tier]
- **Fee Reduction:** $[X.XX] per unit savings
- **Implementation:** [Specific packaging changes needed]
 
**Option 2: Weight Optimization**
- **Current Weight:** [X.X] lbs → **Target Weight:** [Y.Y] lbs
- **Material Changes:** [Lighter packaging materials, reduce components]
- **Fee Impact:** $[X.XX] per unit savings
- **Quality Considerations:** [Impact on protection, presentation]
 
**Option 3: Hybrid Approach**
- **Small Items:** Optimize for Small Standard tier
- **Large Items:** Consider FBM for oversized products
- **Seasonal Strategy:** FBA for peak season, FBM for off-peak
- **Expected Savings:** [X]% reduction in overall fulfillment costs
 
### Seasonal Strategy & Planning
 
**Q4 Storage Fee Management:**
- **Current Strategy:** [Current approach to Q4 storage increases]
- **Recommended Actions:** 
  - Reduce inventory by [X]% before October 1
  - Remove aged inventory before fee increase
  - Plan new shipments for January to avoid peak fees
- **Projected Savings:** $[X.XX] in avoided storage fees
 
**Annual Fulfillment Calendar:**
| Quarter | Strategy | Inventory Levels | Fulfillment Method | Cost Impact |
|---------|----------|------------------|-------------------|-------------|
| Q1 | Restock & optimize | [X] months supply | [FBA/FBM/Hybrid] | [Cost level] |
| Q2 | Maintain & monitor | [X] months supply | [FBA/FBM/Hybrid] | [Cost level] |
| Q3 | Prepare for Q4 | [X] months supply | [FBA/FBM/Hybrid] | [Cost level] |
| Q4 | Peak season | [X] months supply | [FBA focus] | [Higher costs] |
 
### Implementation Action Plan

This is the start of the file. Read the full SKILL.md on GitHub.

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Source

Popularity

Repository stars
706
Repository forks
120
7-day trend score
33

Stars and forks are for the whole GitHub repository, not this skill alone. Refreshed 23 Sep 2026, a month ago.

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