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UPC Evaluator with persistent window (click the toolbar icon). UPC Evaluator is a Chrome extension designed for eBay resellers and collectors who analyze data from ebay's Product Research section. Quickly paste eBay sold-item datasets into the extension and get instant insights including: • Median sale price (including shipping) • Viability score and break-even analysis • Sell-through and velocity metrics • Competition snapshot for active listings The tool helps you make fast, data-driven decisions about what to buy and list — no spreadsheets required. Features • Built-in profit calculator using realistic eBay fee models • Automatic shipping and tax adjustments • Simple copy/export buttons for CSV, Markdown, or JSON Who it’s for • eBay resellers, collectors, and data-driven flippers • Physical-media sellers and sellers who use UPC codes (DVDs, Blu-rays, CDs, games, books) • Anyone wanting to optimize listings and profits Learn more at https://www.upcevaluator.com
Apr 19, 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.