Amazon BSR Explained for Merch Sellers
Amazon BSR (Best Seller Rank) is the most important metric for Merch by Amazon sellers. Understanding BSR can mean the difference between designs that sell and designs that collect dust. Products with BSR under 100,000 typically sell 1+ units per day in their respective category.
What Is BSR?
BSR (Best Seller Rank) is Amazon's internal ranking system that measures how well a product sells relative to others in its category. Key facts:
- BSR 1 = the best-selling product in that category
- BSR updates every 1-2 hours based on recent sales velocity
- Lower BSR = more sales (BSR 5,000 sells more than BSR 50,000)
- BSR is category-specific — a BSR of 10,000 in Clothing means different volume than in Electronics
BSR Ranges and What They Mean for Merch
| BSR Range | Estimated Daily Sales | What It Tells You |
|---|---|---|
| 1–10,000 | 10+ sales/day | Extremely hot — high competition |
| 10,001–50,000 | 3-10 sales/day | Strong demand — worth targeting |
| 50,001–100,000 | 1-3 sales/day | Moderate demand — good for new sellers |
| 100,001–500,000 | Sales every few days | Lower demand — niche opportunities |
| 500,000+ | Rare sales | Avoid unless very niche |
How to Use BSR for Merch Research
Step 1: Find your niche keywords
Search for broad terms like "funny nurse shirt" or "dog lover t-shirt" on Amazon.
Step 2: Analyze the BSR of top results
If the top 10 results all have BSR under 50,000, there's strong demand.
Step 3: Check competition depth
If only 2-3 designs dominate and the rest have high BSR, there's room for you.
Step 4: Look for BSR trends
A design that dropped from BSR 200,000 to BSR 30,000 in a week indicates a trending niche.
Tools for BSR Tracking
AccessSpy automates this entire process. Its BSR scanner:
- Scrapes multi-page Amazon results per keyword
- Tracks BSR changes over time
- Identifies low-competition niches automatically
- Free plan includes 5 BSR scans per month