PayPay Flea Market Japan Price Checker — Market Stats

One call answers: "What is this item going for on PayPay Flea Market — and does anyone want it?"

Instead of dumping raw listings on you, this Actor samples live listings for your keywords on PayPay Flea Market (PayPayフリマ) and returns a ready-to-use price summary — median, average, quartiles, price range — plus a demand-heat signal (like-count statistics), and the individual listings if you want them.

Why PayPay Flea Market?

PayPayフリマ is Japan's #2 flea-market app (LY Corporation), full of trading cards, anime figures, retro games, cameras, and fashion — often priced differently from Mercari for the exact same item. This Actor turns one keyword into structured market intelligence:

• Price before you buy or sell — median and quartiles from real live listings, JPY + USD
• Cross-check Mercari — pairs with our Mercari Japan Price Checker to spot inter-marketplace gaps inside Japan
• Read demand — like-count stats show what actually attracts buyers
• Feed your AI agent or spreadsheet — clean JSON

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": "on_sale",
    "totalListingsFound": 23738,
    "sampledListings": 100,
    "priceJpy": { "min": 1500, "p25": 8800, "median": 19800, "p75": 42000, "max": 171999, "average": 28900 },
    "priceUsd": { "min": 9.3, "p25": 54.6, "median": 122.8, "p75": 260.5, "max": 1066.8, "average": 179.3 },
    "likeCountStats": { "min": 0, "p25": 1, "median": 4, "p75": 12, "max": 96, "average": 9 },
    "checkedAt": "2026-07-03T12:00:00+00:00"
}

Plus (optional) every sampled listing with title, price (JPY + USD), condition, likes, listing date, photo, and a direct paypayfleamarket.yahoo.co.jp URL.

Note: the public search returns live listings only, so statistics reflect asking prices. Like counts are your demand signal.

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 market prices autonomously.

Fair use & data

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

Roadmap

Sold-listing statistics, category filters, and Mercari cross-market comparison in one call. Feedback via issues is very welcome.