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See profit, ROI, margin, FBA fees, BSR and competition right on any Amazon product page. Built for Amazon sellers. Seller Toolkit puts the numbers that matter right on the Amazon product page, so you can judge a product in seconds instead of opening a spreadsheet. WHAT YOU SEE ON EVERY PRODUCT PAGE • Net profit, margin, and ROI — type your cost, get your numbers instantly • FBA and referral fees for that exact product • Sales rank and estimated monthly sales • Buy box price and how many sellers you're up against • Break-even cost — the most you can pay and still profit BUILT FOR AMAZON SELLERS Whether you do online arbitrage, wholesale, or private label, Seller Toolkit helps you decide fast: is this product worth buying, and at what cost? WORKS WITH THE FULL SELLER TOOLKIT PLATFORM The extension pairs with the Seller Toolkit web app, where you get automatic profit tracking from your connected Amazon account, a bulk list scanner, a supplier CRM, shipping calculators, and more. Get access at toolkit.leonvartanian.com PRIVACY The extension only runs on amazon.com pages. It reads the product's ASIN and price to calculate fees and profit. It does not read your browsing history, other tabs, or any personal information. Full policy: toolkit.leonvartanian.com/privacy
Jul 31, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.