Features
SellerBeam loads a sidebar on every Amazon product page and fills it with live data pulled directly from Amazon's Selling Partner API. Here's everything it shows you.
Alerts — Know the risks before you buy
Before you source a single unit, SellerBeam flags the most common deal-killers so you can move on fast.
Gated / Ungated
Instantly checks your seller account's eligibility to list the product via Amazon's Listings Restrictions API. If you're gated, SellerBeam shows the exact reasons Amazon returned — no guessing, no manually searching Seller Central.
Amazon on Listing
Checks whether Amazon.com (ATVPDKIKX0DER) is one of the active sellers on the listing. When Amazon is a seller on its own platform, it wins the Buy Box the vast majority of the time — making competition extremely difficult.
Private Label Detection
Analyzes seller count and listing signals to determine whether the product is likely a private label brand. If only one seller is present, a 'Maybe' warning appears with a plain-language explanation of why this matters.
Profit Calculator — Know your numbers instantly
Enter your cost and see exactly what you'll make. All fee data comes from Amazon's Product Fees API using real product dimensions and weight.
Live Sale Price
Auto-populated from the current Amazon listing. Fully editable — change it to model different pricing scenarios.
Total Fees with expandable breakdown
Shows your total Amazon cost, with an expandable breakdown of: Referral Fee (category-based percentage), FBA Fulfillment Fee (weight/size tier), and FBA Storage Fee. All calculated using real product data from the SP-API, not estimates.
Amazon Payout
The amount Amazon deposits into your account after all fees are deducted from the sale price.
Cost Price input
Enter the price you would pay for the product. SellerBeam instantly calculates Net Profit ($), Return on Investment (ROI %), and Profit Margin (%) as you type.
Keepa Price History
Click the chart icon next to the Sale Price field to open the Keepa price history chart for the product's ASIN in a new tab. Helps you understand price trends and seasonality before committing.
Market Stats — Understand the competition
A snapshot of the product's market position, pulled live from the SP-API every time you open the sidebar.
Best Sellers Rank (BSR)
The product's current BSR in its main category. Pulled live from the SP-API Catalog Items endpoint — always reflects the current ranking, not a cached value.
Estimated Monthly Sales
An estimate of how many units this product sells per month based on its BSR and category. This feature is actively in development and will become more accurate over time.
Number of Sellers + Offers Breakdown
Shows the total seller count. Click to expand a full breakdown of every active offer, showing fulfillment type (AMZ / FBA / FBM) and the listed price for each seller. This helps you quickly assess how competitive the listing is.
Top-Level Category
The product's top-level Amazon browse category (e.g. 'Toys & Games', 'Home & Kitchen'), resolved via the SP-API Categories endpoint. SellerBeam always shows the root category — never a subcategory — for consistent referral fee calculations.