Best Price Comparison API Tools (2025)

Price comparison APIs power some of the most profitable applications on the web — from browser extensions that find cheaper prices to SaaS platforms tracking competitor pricing across thousands of SKUs. Whether you're building a shopping comparison engine, a price monitoring dashboard, or a reseller arbitrage tool, you need reliable data feeds from e-commerce sites.

This guide covers the top price comparison API tools available in 2025, with real pricing data and code examples for each.

Key Takeaways

• Rainforest API offers the most comprehensive Amazon product data at $0.005–$0.03/request
• SearchHive provides a flexible scraping-first approach that works across any e-commerce site, not just Amazon
• SerpApi Shopping covers Google Shopping results with structured pricing at $5/1K searches
• DataForSEO delivers the broadest multi-marketplace coverage at $0.0013/1K results
• For multi-retailer price comparison, a scraping API like SearchHive gives more control than pre-built search APIs

Top Price Comparison API Tools

1. Rainforest API

Rainforest API specializes in Amazon product data — pricing, reviews, ratings, BSR, and availability. It's the go-to choice for Amazon-focused price tracking.

Pricing: $0.005–$0.03 per request depending on the endpoint. Free tier with 100 requests/day.

Best for: Amazon-only price comparison, product research tools, affiliate sites.

import requests

response = requests.get(
    "https://api.rainforestapi.com/request",
    params={
        "api_key": "YOUR_KEY",
        "type": "product",
        "amazon_domain": "amazon.com",
        "asin": "B09V3KXJPB"
    }
)
product = response.json()["product"]
print(f"Price: {product['buybox_price']['value']}")
print(f"Rating: {product['rating']}")

2. SerpApi Shopping

SerpApi's Google Shopping endpoint extracts structured pricing data from Google Shopping search results, including prices across multiple retailers.

Pricing: $25/1K searches on the lowest tier. $75/5K, $150/15K on higher plans.

Best for: Multi-retailer price comparison via Google Shopping, seeing which stores offer the best price.

import requests

params = {
    "engine": "google_shopping",
    "q": "Sony WH-1000XM5",
    "api_key": "YOUR_KEY",
    "num": "10"
}
response = requests.get("https://serpapi.com/search", params=params)
for product in response.json().get("shopping_results", []):
    print(f"{product['title']}: ${product.get('extracted_price', 'N/A')}")

3. DataForSEO

DataForSEO provides structured product data across multiple marketplaces and search engines. Their product pricing API covers Amazon, Google Shopping, and other retailers.

Pricing: ~$0.0013 per result in bulk. Pay-as-you-go with volume discounts.

Best for: Agencies and platforms needing multi-marketplace data at scale with the lowest per-unit cost.

4. PriceAPI (formerly Keepa API)

PriceAPI tracks Amazon pricing history — current price, list price, MAP price, and historical charts. Essential for understanding pricing trends, not just current values.

Pricing: Free tier with 100 requests/day. Paid plans from $13/mo for higher limits.

Best for: Price history analysis, identifying deals, tracking Amazon price drops.

5. ScraperAPI

ScraperAPI is a general-purpose web scraping API with proxy rotation and JavaScript rendering. You point it at any e-commerce page and it returns the raw HTML.

Pricing: $49/mo for 250K requests, $99/mo for 1M requests. JavaScript rendering costs 5 credits per request.

Best for: Custom price extraction from any website, building your own parsers for non-standard e-commerce platforms.

6. Oxylabs E-Commerce Scraper

Oxylabs offers dedicated e-commerce scraping APIs for Amazon, Google Shopping, Walmart, and other major retailers. Enterprise-grade with residential proxies.

Pricing: Custom enterprise pricing. Starts around $300/mo for dedicated plans.

Best for: Enterprise price monitoring at scale, companies needing guaranteed uptime and compliance features.

7. SearchHive ScrapeForge

SearchHive takes a different approach — instead of offering a pre-built "price comparison" endpoint, it gives you a powerful scraping API (ScrapeForge) that works across any e-commerce site, plus structured data extraction out of the box.

Pricing: Free tier with 500 credits. Starter $9/mo for 5K credits. Builder $49/mo for 100K credits. Each scrape costs 5–25 credits depending on complexity.

Best for: Multi-retailer price comparison without vendor lock-in, teams that need both search and scraping, budget-conscious builders.

import requests

headers = {"Authorization": "Bearer YOUR_SEARCHHIVE_KEY"}

# Scrape a product page with structured extraction
response = requests.post(
    "https://api.searchhive.dev/v1/scrapeforge",
    headers=headers,
    json={
        "url": "https://www.amazon.com/dp/B09V3KXJPB",
        "render_js": True,
        "extract": {
            "price": "span.a-price-whole",
            "title": "#productTitle",
            "rating": "span.a-icon-alt",
            "availability": "#availability span"
        }
    }
)
data = response.json()
print(f"Title: {data['extracted']['title']}")
print(f"Price: {data['extracted']['price']}")
print(f"Available: {data['extracted']['availability']}")

8. Google Custom Search JSON API

Google's official search API can return shopping-related results. Being deprecated for new customers (migration deadline January 2027).

Pricing: $5/1K queries on CSE. Being phased out.

Best for: Legacy applications only — do not start new projects with this API.

Comparison Table

Recommendation

For Amazon-only price comparison: Rainforest API or PriceAPI — purpose-built with minimal setup.

For multi-retailer comparison across any website: SearchHive ScrapeForge. It's the most flexible option because you control the extraction logic and aren't limited to pre-indexed retailers. At $49/mo for 100K credits, you can scrape thousands of product pages across dozens of retailers — something that would cost $300+/mo with enterprise scrapers.

For Google Shopping results specifically: SerpApi gives you structured data from Google Shopping with zero parsing effort.

For maximum scale at lowest cost: DataForSEO if you can work with their complex API structure.

The advantage of SearchHive's approach is future-proofing. When Amazon changes its HTML structure, you update your CSS selectors instead of waiting for your API vendor to fix their parser. Combined with SwiftSearch for finding product pages and ScrapeForge for extracting prices, you get a complete price comparison pipeline from one provider.

Get started with SearchHive's free tier — 500 free credits with access to all APIs, no credit card required.