E-commerce Price Monitor

Monitor product prices across major e-commerce platforms. Track price changes over time, detect stock availability changes, and get alerts when prices drop.

Supported Platforms

• Amazon (.com, .co.uk, .de, .fr, .ca, .co.jp, .in)
• Walmart (.com)
• Target (.com)
• Best Buy (.com)
• eBay (.com, .co.uk)
• Any e-commerce site (via JSON-LD/Open Graph structured data)

Features

• Multi-platform price extraction - Platform-specific parsers for reliable data
• Price history tracking - Stores historical prices across runs using Apify key-value store
• Change detection - Automatically compares current vs previous prices
• Alert system - Flag products with price drops or stock changes
• Configurable threshold - Set minimum percentage change for alerts
• Discount detection - Identifies sale prices and calculates savings
• Concurrent fetching - Process multiple products simultaneously

Input

Parameter	Type	Default	Description
startUrls	array	-	Product URLs to monitor (Apify standard format)
urls	array	-	Alternative: simple URL string array
trackHistory	boolean	true	Store price history across runs
alertOnChange	boolean	true	Flag products with changes
priceDropThreshold	number	0	Min % change for alert (0 = any)
concurrency	integer	5	Parallel fetches (max 10)

Output

Each product returns:

{
    "platform": "amazon",
    "url": "https://www.amazon.com/dp/B0BSHF7WHW",
    "title": "Product Name",
    "price": 29.99,
    "currency": "USD",
    "original_price": 39.99,
    "in_stock": true,
    "rating": 4.5,
    "review_count": 1234,
    "discount_amount": 10.0,
    "discount_percent": 25.0,
    "changes": {
        "price_changed": true,
        "previous_price": 34.99,
        "price_difference": -5.0,
        "price_change_percent": -14.29,
        "direction": "down"
    },
    "price_history": {
        "min": 24.99,
        "max": 39.99,
        "avg": 32.49,
        "data_points": 15,
        "first_seen": "2025-01-15T00:00:00Z"
    },
    "alert": true,
    "alert_reason": "Price dropped",
    "scraped_at": "2025-02-23T08:00:00Z"
}

Use Cases

• Competitor pricing - Track competitor product prices daily
• Deal hunting - Monitor products and get alerts on price drops
• Market research - Track pricing trends across categories
• Repricing - Feed price data into automated repricing tools
• Stock monitoring - Know when out-of-stock items return

Scheduling

For continuous monitoring, schedule this actor to run daily or hourly. Price history accumulates across runs automatically when trackHistory is enabled.

Cost

Pay per result. Each product URL counts as one result. Typical run: ~$0.002-0.005 per product depending on platform complexity.