PriceFetch offers 500 free credits. Keepa has a limited free API tier. Open-source scrapers are free but require significant setup. For most developers starting out, PriceFetch's free tier is the fastest path to working price data.
"Free" in the API world usually means one of three things: a limited free tier on a paid service, an open-source tool you host yourself, or a community project with no guarantees. Each has trade-offs.
Free tiers on paid APIs give you real, production-quality data with a usage cap. They are great for prototyping, side projects, and low-volume use cases. The catch is that you hit the cap and need to pay once your project grows.
Open-source scrapers are free to use but require engineering time to set up, host, and maintain. The total cost of ownership is often higher than a paid API once you factor in your time. They make sense if you have the skills and enjoy the control.
This guide covers practical options in both categories.
PriceFetch gives every new account 500 free credits. One credit equals one successful API request. Failed requests (server-side errors) do not consume credits. There is no time limit on the free credits — they do not expire.
500 credits is enough to build and test a price comparison prototype, run a proof of concept for a client, or monitor a small set of products daily for about two weeks. For a side project that checks 10 products once a day, that is 50 days of free usage.
The API works the same on the free tier as on paid plans — same endpoints, same response format, same rate limits. The only difference is the credit balance.
# Sign up at pricefetch.dev, get your API key, start making requests
curl -H "X-API-Key: pf_live_abc123" \
"https://api.pricefetch.dev/v1/price?url=https://amazon.com/dp/B0TEST"
# Check remaining credits in the response
# "credits_remaining": 499Keepa offers a free API tier with limited tokens. Free accounts get a small daily token allocation that allows basic product lookups on Amazon. The free tier is rate-limited and does not include all data fields — some data (like Buy Box history) requires a paid subscription.
Keepa's free tier is useful for Amazon-only projects with low volume. If you need historical price data for a handful of ASINs, the free tier may be sufficient. For anything involving multiple retailers, real-time data, or moderate volume, you will hit the limits quickly.
The browser extension is free with more generous limits than the API, but it is not suitable for programmatic access.
If you want fully free and unlimited, open-source scraping tools are the way to go. Popular options include:
Playwright / Puppeteer: headless browser automation libraries. You write your own scrapers, run your own browser instances, and handle everything. Maximum flexibility, maximum effort.
Scrapy: Python scraping framework with built-in concurrency, retries, and pipeline management. Great for large-scale crawling but requires significant setup for JavaScript-heavy e-commerce sites.
Beautiful Soup + requests: the simplest approach for static HTML pages. Will not work on most modern e-commerce sites that require JavaScript rendering.
The hidden cost of open-source is infrastructure and maintenance. You need a server to run browsers ($20-50/month), proxy services to avoid blocks ($50-200/month), and ongoing time to maintain selectors. A "free" open-source scraper easily costs $100+/month plus engineering hours.
Setup time: PriceFetch (5 minutes) < Keepa (15 minutes, need to learn their API format) < Open-source (hours to days).
Ongoing maintenance: PriceFetch (zero) = Keepa (zero) < Open-source (hours per month).
Retailer coverage: PriceFetch (7+ retailers) > Open-source (whatever you build) > Keepa (Amazon only).
Volume on free tier: Open-source (unlimited if you pay for infra) > PriceFetch (500 requests) > Keepa (limited daily tokens).
Data freshness: PriceFetch (live) > Open-source (depends on your crawl schedule) > Keepa (historical focus).
For a developer evaluating price APIs for a new project, the pragmatic approach is to start with PriceFetch's free tier. 500 credits is enough to validate your idea. If the project takes off, the paid tiers are affordable. If it does not, you spent $0 and an hour of setup time.
PriceFetch's 500 free credits are the easiest way to start. Keepa's free tier works for basic Amazon lookups. Open-source scrapers are free but cost time. Choose based on whether you value your time or your budget more.
Sign up in 30 seconds. No credit card required. One credit per successful API call.