Price Comparison Crawler

Price-check any product across marketplaces in one run. Give it product keywords (or product URLs) and it returns normalized, deduped competitor listings — title, price, currency, seller, rating, url, marketplace — ready to sort, compare, or feed into a pricing model.

• 🔎 Search eBay and Google Shopping by keyword
• 🔗 Or extract a price straight off any product URL (schema.org JSON-LD → OpenGraph → price meta)
• 🧹 One clean, deduped schema across every source — prices parsed to both major units and integer minor units, currency detected
• 🆓 Free to use — you pay Apify only for the platform compute/proxy you consume

Input

{
  "queries": ["the ordinary niacinamide 10% serum"],
  "marketplaces": ["ebay", "google_shopping"],
  "startUrls": [{ "url": "https://example-shop.com/product/123" }],
  "country": "sg",
  "maxItemsPerQuery": 20,
  "proxyConfiguration": { "useApifyProxy": false }
}

• queries + marketplaces — runs each query through each search adapter.
• startUrls — pulls a price straight off any product page via schema.org JSON-LD → OpenGraph → price meta tags (no per-site adapter needed).
• country — region hint (eBay TLD, Google gl/hl).

Sources

Adapter	Engine	Reliability
ebay	HTTP (server-rendered)	Solid from datacenter IPs — the default.
google_shopping	HTTP	Best-effort — Google often serves a consent/bot wall to datacenter IPs; use a residential proxy. Returns [] cleanly when blocked.
product URLs (JSON-LD)	HTTP	Works on most e-commerce product pages that emit schema.org Product.

Output

One dataset row per listing:

{
  "title": "The Ordinary Niacinamide 10% + Zinc 1% 30ml",
  "price": 12.9, "priceMinor": 1290, "priceText": "S$12.90", "currency": "SGD",
  "seller": "beautystore_sg", "rating": 4.8, "reviewCount": 231,
  "availability": "InStock", "image": "https://…",
  "marketplace": "ebay", "query": "the ordinary niacinamide 10% serum",
  "country": "sg", "url": "https://www.ebay.com/itm/…", "scrapedAt": "2026-…"
}

Field names follow tolerant families (title / price / url / rating / seller) so the output drops cleanly into a downstream price-comparison normalizer.

Run locally

npm install
apify run --input='{"queries":["airpods pro 2"],"marketplaces":["ebay"],"country":"us"}'

Extending

Add a marketplace by dropping a src/adapters/<name>.js that exports buildRequests(query, country) and parse($), then register it in src/adapters/index.js. JS-heavy marketplaces (Lazada/Shopee) need a PlaywrightCrawler + residential proxy — documented as the next adapter tier.