CollectorLens — Comic Value for eBay

About

Stop opening a second tab for every comic.

CollectorLens adds a small badge to eBay comic listings while you browse. For each graded book it parses the issue + grade from the title and shows you, inline:

📊 Sold-comps price RANGE — the span (min–max) and number of recent eBay sold listings for the same issue & grade.
🔑 Key-issue marker — flags well-known key issues (first appearances etc.) from a built-in list.
⚠️ Edition warning — a clear reminder to check Original vs. Reprint/Facsimile, because those sell at very different prices.

Honest by design. CollectorLens shows a range, not a single "this is worth $X" number — because issue + grade alone can mix an original with a cheap reprint. A wrong number is worse than none. Use it as a starting point and verify the edition before you buy.

Private by design. No account, no sign-up, no server, no tracking. Everything runs locally in your browser; it only reads the eBay page you're viewing and eBay's own public sold-listings in your session.

Works on eBay comic search results and listings. Free.