PriceTrack — Amazon Price History & Drop Alerts

Know whether today's price is high or low — using the prices you actually saw.

Most product pages show one number: today's price. PriceTrack adds a small panel next to the buy box on Amazon product pages that turns the prices you've already seen into a simple chart: current price, lowest and highest observed, average, and a plain-language badge such as "Lowest seen so far" or "Mid range".

What you get:

• Price history panel with chart on Amazon product pages

• Lowest / highest / average observed price and observations count

• Optional desktop notification when a tracked price drops by your threshold

• Background re-checks about every 6 hours

• Popup overview of your most recently updated products

• Settings page with JSON export and import

• Dark mode support

• 16 Amazon marketplaces supported

• Complete source code included (manifest, content script, background worker, popup, options, styles, icons)

• Icon generator script and finished 16/48/128 px icons

• README with install steps, permissions, and limits

Private by design — everything is stored in your browser's local storage. No account, no server, no analytics.

Works with Chrome and other Chromium browsers on desktop (Manifest V3). Install with the standard "Load unpacked" step; full instructions included.

Not affiliated with, endorsed by, or sponsored by Amazon.