How to Track Amazon Prices, Deals, and Competitors in Real Time

Key Takeaway: Amazon price tracker APIs help businesses watch competitor prices, spot deals, and adjust their own prices in real time to boost profits and stay competitive.

Key Terms

• Amazon Price Tracker API: Software that automatically retrieves and monitors pricing for Amazon products
• Dynamic Pricing: Strategy of adjusting prices in real-time based on market conditions and competitor activity
• MAP Violations: When sellers advertise products below the Minimum Advertised Price set by manufacturers
• Buy Box: The featured seller position on Amazon product pages where most purchases occur
• ASIN: Amazon Standard Identification Number used to identify products

What Is an Amazon Price Tracker API?

An Amazon price tracker API is a powerful tool that automatically monitors product prices, deals, and competitor activity on Amazon. With the Product Pricing API, apps can update and manage prices for sellers, which cuts down the time and effort it takes to stay competitive.

In our experience working with thousands of sellers and brands, manual price monitoring simply doesn’t scale. We’ve seen that businesses using automated price tracking APIs can respond to market changes 10x faster than those that track prices by hand.

Why Track Amazon Prices in Real-Time?

Stay Competitive in a Fast-Moving Market

Amazon’s marketplace changes rapidly. As of early 2025, there are over 9.7 million third-party sellers on Amazon, and the number grows every year. Prices can change several times a day, so being even hours behind competitors can cost you sales.

Maximize Your Profit Margins

Real-time price tracking helps you find the sweet spot between competitiveness and profitability. We tested our Rainforest API with a client’s electronics catalog and they were able to increase prices on 30% of their products without losing the Buy Box. This boosted their margins by an average of 8%.

Protect Your Brand

Automatically monitor unauthorized sellers and MAP violations. With structured data, you can take enforcement actions more quickly and effectively.

How Rainforest API Works for Price Tracking

Real-Time Data Extraction

Rainforest API retrieves live pricing data directly from Amazon product pages in real-time. No queues. No waiting. Here’s what you get in each response:

{
  "product": {
    "asin": "B08N5WRWNW",
    "title": "Echo Dot (4th Gen)",
    "price": {
      "symbol": "$",
      "value": 29.99,
      "currency": "USD",
      "raw": "$29.99"
    },
    "deal": {
      "is_deal": true,
      "original_price": 49.99,
      "deal_type": "Lightning Deal"
    },
    "buybox_winner": {
      "seller_name": "Amazon.com",
      "is_amazon": true,
      "price": 29.99,
      "shipping": "FREE"
    }
  }
}

  

Source: Rainforest API Product Documentation

Structured, Clean Data

Unlike scraping tools that need constant maintenance, Rainforest API provides clean,  structured JSON data that’s ready to use. No setup or custom parsing is required.

Setting Up Price Monitoring

Step 1: Choose Your Monitoring Strategy

Single Product Tracking: Monitor specific ASINs for price changes, deal status, and Buy Box shifts.

Competitor Analysis: Track competitor product catalogs to understand their pricing strategies.

Category Monitoring: Watch entire product categories for market trends and opportunities.

Step 2: Configure Your Requests

Here’s a basic price tracking request:

curl "https://api.rainforestapi.com/request" \
  -d "api_key=YOUR_API_KEY" \
  -d "type=product" \
  -d "asin=B08N5WRWNW" \
  -d "amazon_domain=amazon.com"


  

Step 3: Set Up Automated Monitoring

Use Collections API for scheduled monitoring:

{
  "collection_name": "daily_price_check",
  "schedule": "0 6 * * *",
  "requests": [
    {
      "type": "product",
      "asin": "B08N5WRWNW"
    }
  ]
}

  

Advanced configurations available in Rainforest API Documentation

Business Use Cases

Dynamic Pricing Automation

Repricers are automated tools that continuously competitor prices, market changes, and other relevant factors to adjust a seller’s prices in real time.

Real-World Example: We worked with an electronics retailer who used our API to monitor 5,000 ASINs every hour. When competitors lowered prices, their system automatically made adjustments within minutes, which helped them stay competitive and protect margins.

MAP Enforcement

Monitor thousands of products for pricing violations automatically. One brand protection team told us, “We used to spend 10 hours weekly checking for MAP violations manually. Now our system flags violations within hours, and we can focus on enforcement instead of detection.”

Competitive Intelligence

Track competitor promotion strategies, deal frequency, and pricing patterns. Knowing when competitors typically run sales helps you plan your promotional calendar more effectively.

Inventory Management

Check stock levels and availability across competitors. Monitor product prices, deal types, and stock status across geographies. When competitors go out of stock, you can adjust your pricing to capture additional market share.

Case Study: See how Sigil used Traject Data to scale brand protection without custom scraping infrastructure.

Advanced Features

Multi-Geography Tracking

Monitor prices across different Amazon domains (US, UK, DE, etc.) to understand global pricing strategies and identify arbitrage opportunities.

Historical Price Analysis

Track price trends over time to identify seasonal patterns and optimal pricing windows. Our API maintains historical data, so you can analyze how pricing changes affect sales.

Deal and Promotion Detection

Automatically detect Lightning Deals, coupons, and promotional pricing. This helps you understand competitor promotional strategies and react quickly to market changes.

Integration Options

REST API Integration

Direct API calls for real-time price checks and monitoring setup.

Webhook Notifications

Get instant alerts when prices change or specific conditions are met.

Bulk Data Processing

Use Collections for monitoring thousands of products simultaneously.

No-Code Solutions

Integrate with tools like Zapier for automated workflows without custom development.

For detailed implementation guides, visit our FAQ section or explore our product documentation.

Getting Started

Ready to start tracking Amazon prices like a pro? Here’s your action plan:

1. Start with a free trial – 100 requests to test the API
2. Identify your key products – Focus on your most important ASINs first
3. Set up automated monitoring – Use Collections for scheduled tracking
4. Build your competitive advantage – React faster than competitors to price changes

Frequently Asked Questions

Rainforest API plans start at $15/month for 1,000 requests. Each successful product data request counts toward your quota. You can upgrade, downgrade, or cancel anytime based on your needs.