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.

Try it free in 30 seconds: hit Start with the prefilled example — one keyword costs a flat $0.02, covered many times over by the $5 free usage credit every Apify account gets each month.

日本語ガイド — PayPayフリマの相場を1コールで

概要: PayPayフリマの出品中商品をキーワード検索し、価格の統計 — 中央値・平均・四分位・価格帯(円+ドル換算)— と「いいね数」の統計(需要の強さのシグナル)を JSON で返します。出品前の値付け、仕入れ判断、メルカリ相場チェッカーと組み合わせたフリマ間の価格差チェックに使えます。

使い方: 入力欄にキーワードを入れて Start を押すだけ。日本語キーワードが最も精度が高く、複数キーワードの一括チェックもできます。

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

料金: 1キーワードあたり $0.02(約3円) の従量課金で、サブスクリプションや月額固定費はありません。個別の出品一覧(タイトル・価格・いいね数・URL 付き)も欲しい場合は Include individual listings をオンにすると +$0.002/件。結果が0件のキーワードには課金されません。Apify の無料プランには毎月 $5 分の無料クレジットが付くので、月250回程度の相場チェックまで実質無料です。

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

Pricing — know your cost before you run

No subscription, no monthly rental — you pay per call:

Event	Price
Price summary (one per keyword)	$0.02
Individual listing record (optional, off by default)	$0.002 each

• A default run costs a flat $0.02 per keyword — the summary is the product. 10 keywords = $0.20.
• Want the raw listings too? Turn on Include individual listings: e.g. 100 listings add $0.20.
• Keywords with zero results are never charged.
• Apify's free plan includes $5 of usage credit every month — about 250 price checks at no cost. Most scrapers rent by the month; here an occasional price check costs cents.

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.