Building a price tracker Chrome extension with AI gives you a personal tool that monitors prices on any e-commerce site, records history, and sends alerts when prices drop below your target. On aidowith.me, the Chrome Extension route walks you through 14 steps to build this from scratch. You'll create content scripts that extract prices from product pages (Amazon, eBay, Shopify stores, and others), build a storage system that tracks price history over time, add a popup that shows price charts and trends, and set up notification alerts for price drops. AI generates all the code using Cursor. The route covers handling different site structures (AI helps identify price elements across sites), scheduling periodic price checks, and building a clean UI that shows your tracked products at a glance. The full build takes about 4 hours. You'll have a working extension that replaces paid price tracking tools and gives you full control over which products you monitor.
Last updated: April 2026
The Problem and the Fix
Without a route
- You manually check prices on 10+ products every week and miss drops because you forget
- Existing price tracker extensions share your browsing data and charge monthly fees
- Amazon price history tools don't work on smaller stores where you also shop
With aidowith.me
- Automatic price monitoring across any e-commerce site, not just Amazon
- Your own tool with zero data sharing and no monthly subscription fees
- Price history charts and drop alerts so you never miss a deal on tracked products
Who Builds This With AI
Founders
Move fast on pitches, pages, research. AI as your first hire.
Marketers
Content, campaigns, and briefs done in hours instead of days.
Sales & BizDev
Prep calls, draft outreach, research prospects in minutes.
How It Works
Build the price scraper
Create content scripts that extract prices from product pages. AI helps identify price elements across different site structures so it works on multiple stores.
Add price tracking and history
Build storage for price records over time. Create a popup with price history charts and trend indicators. Track as many products as you want.
Set up alerts and install
Add notification alerts for price drops below your target. Install in Chrome and start tracking products you're watching.
Build your price tracker extension
14 steps. About 4 hours. Price tracking on any site, alerts when prices drop.
Start This Route →What You Walk Away With
Build the price scraper
Add price tracking and history
Set up alerts and install
Price history charts and drop alerts so you never miss a deal on tracked products
"Saved $340 in the first month because I got alerts on drops I would have missed. Took an afternoon to build and works on every store."- Procurement specialist, retail business
Questions
It works on most e-commerce sites. AI helps the extension identify price elements even when sites use different HTML structures. Amazon, eBay, Walmart, Shopify stores, and independent e-commerce sites are all supported. Some sites with heavy anti-scraping measures may need adjustments the route covers.
You set the frequency. The route builds both on-visit checks (when you browse the product page) and scheduled background checks. Background checks can run every few hours. More frequent checks use more system resources, so the route helps you find the right balance for your needs.
Yes. Cursor AI generates all the code from your descriptions. The route explains every file and function so you know what's happening. No prior coding experience needed. People with no technical background have completed this route and shipped working price tracker extensions.