Shopify Real-Time Price Tracker

Monitor Shopify store product prices in real-time, track price changes, and get alerts when prices change by a specified percentage.

Features

✅ Real-time Price Tracking - Monitor product prices across multiple Shopify stores 📊 Price Change Detection - Get notified when prices drop or increase by your threshold 💾 Persistent Storage - Save product URLs and price history between runs 🔄 Scheduled Monitoring - Configure hourly, daily, or weekly checks 📈 Detailed Reports - View comprehensive price change statistics 🎯 Smart Alerts - Only alert on significant price changes (configurable threshold)

Input Parameters

Required Fields

• Product URLs - List of Shopify product URLs to monitor
  • Example: https://shop.gymshark.com/products/gymshark-vital-seamless-2-0-leggings-black
  • Leave empty to use saved URLs from previous run

Optional Fields

• Use Saved Product URLs (default: true)

  • Reuse URLs from last run without pasting them again

• Save Product URLs for Next Run (default: true)

  • Automatically save URLs for future runs

• Check Interval (default: every-6-hours)

  • Options: hourly, every-6-hours, daily, weekly
  • Use this setting when scheduling the Actor

• Price Change Alert Threshold (default: 5%)

  • Only alert if price changes by this percentage or more
  • Range: 0-100%

• Maximum Products to Track (default: 10)

  • Maximum number of products to track per run
  • Range: 1-100

Output

The Actor produces a structured dataset with the following fields:

• url - Product URL
• productTitle - Product name
• currentPrice - Current price
• previousPrice - Price from last run (if available)
• priceChange - Dollar amount change
• percentChange - Percentage change
• status - One of:
  • tracked - First time tracking
  • price_dropped - Price decreased significantly
  • price_increased - Price increased significantly
  • no_significant_change - Changed but below threshold
  • error - Failed to extract price
• currency - Currency code (e.g., USD)
• timestamp - ISO timestamp
• lastChecked - Human-readable date/time

How It Works

1. Price Extraction - Uses multiple strategies to extract prices:

   • JSON-LD structured data (most reliable)
   • Common Shopify CSS selectors (fallback)

2. Price Comparison - Compares current prices with stored historical data

3. Change Detection - Calculates price changes and flags significant movements

4. Data Storage - Saves price history and product URLs for next run

5. Report Generation - Exports results to dataset in table format

Example Input

{
  "productUrls": [
    {"url": "https://shop.gymshark.com/products/gymshark-vital-seamless-2-0-leggings-black"},
    {"url": "https://www.allbirds.com/products/mens-wool-runners"}
  ],
  "useSavedProducts": true,
  "saveProducts": true,
  "checkInterval": "every-6-hours",
  "priceChangeThreshold": 5,
  "maxProducts": 10
}

Local Development

Prerequisites

• Node.js 20+
• Apify CLI (install: curl -fsSL https://apify.com/install-cli.sh | bash)

Installation

cd shopify-price-tracker
npm install

Run Locally

$apify run

Deploy to Apify Platform

# Login to Apify
apify login

# Push to platform
apify push

Best Practices

• Respect Rate Limits - The Actor uses concurrency controls and delays
• Monitor Responsibly - Don't track too many products at once
• Review Terms of Service - Ensure compliance with store policies
• Set Realistic Thresholds - 5-10% is good for most use cases
• Schedule Wisely - Every 6 hours is sufficient for most price tracking

Scheduling

To run the Actor on a schedule:

1. Deploy to Apify Platform (apify push)
2. Go to Actor Settings → Schedule
3. Create schedule matching your checkInterval setting
4. Enable "Use Saved Products" to avoid re-entering URLs

Troubleshooting

No prices extracted

• Check if the product page is accessible
• Verify the URL is a valid Shopify product page
• Some stores may require JavaScript rendering (this Actor uses Cheerio)

Too many errors

• Reduce maxProducts setting
• Check proxy configuration
• Verify network connectivity

Missing previous prices

• Ensure saveProducts is enabled
• Price history builds over multiple runs

Support

For issues, feature requests, or questions:

• GitHub Issues: Report an issue
• Apify Forum: https://forum.apify.com/
• Documentation: https://docs.apify.com/

License

ISC License - See LICENSE file for details