Yahoo! Auctions Japan Sold Comps — Price Stats from Closed Auctions

One call answers: "What does this item actually sell for on Yahoo! Auctions Japan — and how hard do bidders fight for it?"

Instead of dumping raw listings on you, this Actor samples closed (ended) auctions for your keywords and returns a ready-to-use sold-price summary — median, average, quartiles, price range, plus bid-competition statistics — and the individual sold auctions if you want them.

Why closed auctions?

Yahoo! Auctions (ヤフオク) is Japan's biggest auction marketplace and the country's deepest source of collectibles, retro games, camera gear, watches, and trading cards. Its closed-auction data is the ground truth of what Japanese buyers really pay — but it's only browsable in Japanese, one page at a time. This Actor turns it into structured market intelligence:

• Price a collection before you buy or sell — median and quartiles from real final prices
• Measure competition — bid-count statistics show how contested an item is
• Spot arbitrage — compare Japan sold prices against eBay/your local market (USD conversion included)
• Cross-check Mercari comps — pairs perfectly with our Mercari Japan Price Checker

Input example

{
    "keywords": ["ポケモンカード リザードン psa10", "Leica M6"],
    "maxItemsPerKeyword": 100,
    "convertToUsd": true
}

Output

One price_summary record per keyword:

{
    "type": "price_summary",
    "keyword": "ポケモンカード リザードン psa10",
    "status": "closed_auctions",
    "totalListingsFound": 4879,
    "sampledListings": 100,
    "soldListings": 84,
    "priceJpy": { "min": 1200, "p25": 9250, "median": 24800, "p75": 46500, "max": 158000, "average": 31420 },
    "priceUsd": { "min": 7.4, "p25": 57.4, "median": 153.8, "p75": 288.4, "max": 980.1, "average": 194.9 },
    "bidCountStats": { "min": 1, "p25": 1, "median": 3, "p75": 12, "max": 47, "average": 8 },
    "checkedAt": "2026-07-03T12:00:00+00:00"
}

Plus (optional) every sold auction with title, final price (JPY + USD), bids, condition, end time, photo, and a direct auctions.yahoo.co.jp URL. Statistics are always computed from auctions that actually sold (≥1 bid).

Use with AI agents

Works out of the box with the Apify MCP server, so Claude, ChatGPT, and other MCP-enabled agents can check Japanese auction prices autonomously — for example inside an automated sourcing or repricing workflow.

Fair use & data

• Reads only publicly visible closed-auction data — no login; seller identities are excluded from the output
• Requests are throttled to keep the load on Yahoo! Auctions negligible
• Not affiliated with LY Corporation. Data is provided for market research; verify before large transactions

Roadmap

Category and price filters, seller-type breakdown (store vs individual), and Mercari cross-market comparison in one call. Feedback via issues is very welcome.