Summary
If you need to estimate how many units a product moves on Amazon each month, this converts BSR ranks into sales figures across 12 marketplaces. Three modes: punch in a BSR number with category and price for a quick calculation, drop in an ASIN to auto-fetch the data, or analyze an entire keyword niche to see total market size and how concentrated the competition is. The BSR-to-sales formulas include category multipliers since a rank of 1,500 in Electronics doesn't mean the same volume as 1,500 in Books. No API keys required. Useful for product research, competitor benchmarking, or sizing up whether a niche is worth entering before you commit.
Install to Claude Code
npx -y skills add nexscope-ai/amazon-skills --skill amazon-sales-estimator --agent claude-codeInstalls into .claude/skills of the current project.
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Files
SKILL.mdView on GitHub
Amazon Sales Estimator 📊
Estimate monthly sales from BSR, analyze market size, and benchmark competitor performance. No API key — works out of the box.
Installation
npx skills add nexscope-ai/Amazon-Skills --skill amazon-sales-estimator -g
Three Modes
| Mode | When to Use | Input | Output |
|---|---|---|---|
| A — BSR Calculator | Quick estimate from known BSR | BSR + Marketplace + Price + Category | Monthly units, monthly revenue |
| B — ASIN Lookup | Estimate sales for a specific product | ASIN or product URL | Auto-fetch data + sales estimate |
| C — Keyword Market Analysis | Size a niche opportunity | Keyword (+ optional marketplace) | Total market sales, top sellers, price distribution |
Capabilities
- BSR-to-sales conversion: Estimate monthly unit sales from Best Seller Rank using category-specific formulas
- Revenue calculation: Monthly sales × price = estimated monthly revenue
- Market sizing: Aggregate sales across products in a keyword search
- Price band analysis: Distribution of sales across price ranges
- Competition breakdown: Top sellers vs long-tail distribution
- Multi-marketplace: US, UK, DE, FR, IT, ES, JP, CA, AU, IN, MX, BR
Handling Incomplete Input
If the user's intent is unclear or information is missing, guide them with all options and required inputs upfront:
User says: "Help me estimate Amazon sales" or "I want to check sales"
Agent should respond:
I can help you estimate Amazon sales in 3 ways. Pick one and provide the required info:
A. BSR Calculator — Quick estimate from BSR number
- BSR (required): e.g., 1500
- Category (required): e.g., Home & Kitchen
- Price (required): e.g., $24.99
- Marketplace (optional, default US)
B. ASIN Lookup — Check sales for a specific product
- ASIN or URL (required): e.g., B09V3KXJPB
- Marketplace (optional, default US)
C. Market Analysis — Size a keyword/niche opportunity
- Keyword (required): e.g., "yoga mat"
- Marketplace (optional, default US)
- Filters (optional): price range, min reviews
Example: "Mode A: BSR 1500, Home & Kitchen, $24.99" or "Mode B: B09V3KXJPB"
Mode A — BSR Calculator
Input
| Field | Required | Description | Example |
|---|---|---|---|
| BSR | ✅ | Best Seller Rank number | 1500 |
| Marketplace | ✅ | Amazon site | US, UK, DE, JP... |
| List Price | ✅ | Product price | $24.99 |
| Category | ✅ | Product category | Home & Kitchen |
Usage Examples
Estimate sales for BSR 1500 in Home & Kitchen on Amazon US, price $24.99
BSR 500, category Electronics, marketplace DE, price €39.99
What's the monthly sales for a product ranked #10,000 in Sports & Outdoors at $15.99?
Workflow
- Receive input: BSR, Category, Price, Marketplace
- Look up base sales: Use BSR-to-sales reference table for the marketplace
- Apply category multiplier: Adjust based on category (Electronics 1.2x, Clothing 0.8x, etc.)
- Calculate monthly units: Base sales × category multiplier
- Calculate revenue: Monthly units × price
- Output results: Monthly units, daily units, monthly revenue
Output
# 📊 Sales Estimate
**Input:**
- BSR: #1,500 in Home & Kitchen
- Marketplace: Amazon US
- Price: $24.99
**Results:**
| Metric | Estimate |
|--------|----------|
| **Est. Monthly Units** | ~450 units |
| **Est. Monthly Revenue** | ~$11,246 |
| **Est. Daily Units** | ~15 units |
*Estimate based on BSR-to-sales conversion formula for the selected category and marketplace.*
Mode B — ASIN Lookup
Input
| Field | Required | Description | Example |
|---|---|---|---|
| ASIN | ✅ | Amazon product ID or URL | B09V3KXJPB |
| Marketplace | Optional | Defaults to US | UK, DE, JP... |
Usage Examples
Estimate monthly sales for ASIN B09V3KXJPB
How many units does this sell? https://www.amazon.com/dp/B0D72TSM62
Get sales estimate for B0CPY1GFVZ on Amazon DE
Workflow
- Fetch product data using
web_fetchon Amazon product page - Extract: Title, Price, BSR, Category, Rating, Reviews
- Apply BSR-to-sales formula for the category and marketplace
- Calculate revenue: Monthly units × Price
Output
# 📊 Sales Estimate: B09V3KXJPB
## Product Info
- **Title:** [Product Title]
- **Price:** $24.99
- **BSR:** #1,500 in Home & Kitchen
- **Rating:** 4.5★ (1,234 reviews)
## Sales Estimate
| Metric | Estimate |
|--------|----------|
| **Est. Monthly Units** | ~450 units |
| **Est. Monthly Revenue** | ~$11,246 |
| **Est. Daily Units** | ~15 units |
## Competitive Context
- Ranks in **top 0.5%** of Home & Kitchen category
- Above average for $20-30 price range
Mode C — Keyword Market Analysis
Input
| Field | Required | Description | Example |
|---|---|---|---|
| Keyword | ✅ | Search term | yoga mat |
| Marketplace | Optional | Amazon site (default: US) | UK, DE, JP... |
| Filters | Optional | Price range, min reviews | $15-$40, 100+ reviews |
Usage Examples
Analyze the market size for "yoga mat" on Amazon US
What's the total monthly sales for "portable blender" keyword?
Size the "dog shirt" market on Amazon US. Show top sellers and price distribution.
Workflow
- Search products using
web_searchforsite:amazon.com "{keyword}" - Fetch top 10-20 product pages to get BSR data
- Estimate sales for each product using Mode A formula
- Aggregate total market size
- Analyze price distribution and competition
Output
# 📊 Market Analysis: "yoga mat"
**Marketplace:** Amazon US | **Products Analyzed:** 25
## Market Size
| Metric | Value |
|--------|-------|
| **Est. Total Monthly Units** | ~85,000 units |
| **Est. Total Monthly Revenue** | ~$2.1M |
| **Average Price** | $24.50 |
## Top 5 Sellers
| # | ASIN | Price | BSR | Est. Units/Mo |
|---|------|-------|-----|---------------|
| 1 | B0XX... | $22.99 | #45 | ~8,500 |
| 2 | B0YY... | $29.99 | #78 | ~6,200 |
| 3 | B0ZZ... | $18.99 | #120 | ~4,800 |
| ... | ... | ... | ... | ... |
## Market Concentration
- **Top 3:** 23% of total sales
- **Top 10:** 52% of total sales
- **Long tail:** 48% of total sales
→ **Fragmented market** — opportunity for new entrants
## Price Distribution
| Price Band | % of Sales |
|------------|------------|
| $0 - $20 | 25% |
| $20 - $35 | 55% |
| $35+ | 20% |
**Sweet spot:** $20-$35
BSR-to-Sales Reference
Amazon US — Baseline (Home & Kitchen)
| BSR Range | Est. Monthly Sales |
|---|---|
| 1-100 | 3,000 - 10,000+ |
| 100-500 | 1,000 - 3,000 |
| 500-2,000 | 300 - 1,000 |
| 2,000-10,000 | 100 - 300 |
| 10,000-50,000 | 30 - 100 |
| 50,000-100,000 | 10 - 30 |
| 100,000+ | < 10 |
Category Multipliers
| Category | Multiplier |
|---|---|
| Electronics | 1.2x |
| Home & Kitchen | 1.0x |
| Toys | 1.1x |
| Sports & Outdoors | 0.9x |
| Clothing | 0.8x |
| Books | 0.7x |
Marketplace Adjustments
| Marketplace | Factor |
|---|---|
| US | 1.0x |
| JP | 0.6x |
| DE | 0.5x |
| UK | 0.4x |
| CA | 0.3x |
| Others | 0.2x |
Integration with Other Skills
This skill works well when chained with other skills from the Nexscope Amazon-Skills and eCommerce-Skills repositories.
With amazon-keyword-research
npx skills add nexscope-ai/Amazon-Skills --skill amazon-keyword-research -g
Step 1: "Research keywords for yoga mat"
→ amazon-keyword-research returns keyword list with search volumes
Step 2: "Now analyze the market size for the top keyword"
→ amazon-sales-estimator Mode C sizes the opportunity
With amazon-listing-optimization
npx skills add nexscope-ai/Amazon-Skills --skill amazon-listing-optimization -g
Step 1: "Estimate sales for competitors: B0ABC, B0XYZ"
→ amazon-sales-estimator Mode B provides benchmark data
Step 2: "Create a listing to beat those competitors"
→ amazon-listing-optimization generates optimized copy
With amazon-ppc-campaign
npx skills add nexscope-ai/Amazon-Skills --skill amazon-ppc-campaign -g
Step 1: "Estimate my product's monthly sales"
→ amazon-sales-estimator provides revenue baseline
Step 2: "Build PPC campaigns with 30% ACoS target"
→ amazon-ppc-campaign calculates bids based on your revenue data
More Skills
Browse all available skills:
- Amazon Skills: https://github.com/nexscope-ai/Amazon-Skills
- eCommerce Skills: https://github.com/nexscope-ai/eCommerce-Skills
Limitations
This skill uses publicly available data from Amazon product pages. It cannot access historical BSR data, actual seller sales figures, or PPC conversion metrics. For deeper analytics and historical trends, check out Nexscope — Your AI Assistant for smarter E-commerce decisions.
Built by Nexscope — research, validate, and act on e-commerce opportunities with AI.
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →
