Yahoo! Flea Market Japan Listing Price Summary

What it does: Summarizes current listing prices and likes on Yahoo! Flea Market Japan (formerly PayPay Flea Market), one row per keyword.

You enter: keywords, e.g. ポケモンカード リザードン psa10 (Japanese works best; brand names like Leica M6 also work)

You get: Median listing price, middle 50% range, lowest–highest, average, likes and listings found — in JPY/USD, from the first 100 listings by default. Optional sampled item rows are off by default.

Price: $0.02 per keyword. +$0.002 per listing if you also want the list (off by default). No results = no charge.

Example: enter ポケモンカード リザードン psa10 → median ¥82,950 · range ¥5,480–599,999 · typically 4 likes · measured on 100 of the 20,195 listings found (real run, 2026-08-17)

Unofficial — not affiliated with PayPay Flea Market. Reads public pages only.

Choose the output for your job

Use the summaries to compare product price levels or refresh the same buying list. Prices come from public search cards; they are not confirmed sold prices or guaranteed amounts at which an item can be purchased.

• Compare price levels: use this Actor for one price_summary per keyword. The default samples up to 100 listings; maxItemsPerKeyword accepts 30–500. Keep includeIndividualItems off for summaries only.
• Inspect the sample behind a summary: enable includeIndividualItems to add the sampled item rows at $0.002 each. This is a bounded sample, rather than a complete inventory export.
• Collect a larger item feed: use Yahoo! Flea Market Japan Bulk Listings for one row per OPEN search result, up to 2,000 per keyword. It accepts 1–5 keywords and has its own row-based pricing. It does not produce this Actor's price and like summaries.
• Check completed-sale price evidence: use Mercari Japan Sold Prices or Yahoo! Auctions Japan Sold Prices. Those are different marketplaces; this Actor's live listing prices do not establish sale values.

Refresh a saved price watchlist

Save your keywords, sample limit and output option as an Apify Task. Schedule that Task at the cadence your pricing work needs, retaining each run's dataset. Compare price_summary rows by keyword and checkedAt, and check keywordStatus before interpreting empty price fields.

Keep the same search spelling and sample limit when comparing runs. Search order and the sampled stock can change, so a moving median is a change in the observed sample, not proof that the same items changed price. For optional item rows, join by id and retain the run timestamp alongside them. An item missing from a later bounded sample does not prove it sold. The Actor does not keep a baseline or return a cross-run change feed; each scheduled run is billed under the same summary and optional-item rules.

日本語ガイド — PayPayフリマの相場を調べる

概要: PayPayフリマの出品中の商品をキーワードで検索し、価格の要約 — 中央値・平均・中間50%の価格帯・最安〜最高(円+ドル換算)— と「いいね数」の要約(買い手の関心の目安)を返します。出品前の値付け、仕入れ判断、メルカリ相場チェッカーと並べて2サイトの価格差を見る用途に使えます。なお PayPayフリマの公開検索は出品中の商品しか返さないため、数字は「売れた値段」ではなく「出品されている値段」です。

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) の従量課金です。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。0件のキーワードでも行自体は返り(keywordStatus: "not_found" と次の一手のヒント付き)、run は正常終了します。綴り違いで PayPay が別の語を検索した場合は、その結果は混ぜず queryRewrittenTo に検索された語だけを入れて返します。

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. One keyword gives you:

• A price to work from before you buy or sell — the median and the middle 50% range of what is listed right now, in yen and US dollars
• A second opinion from Mercari — run our Mercari Japan Price Checker on the same keyword to see the gap between the two sites
• A read on demand — the like counts show what buyers are actually watching
• Something you can put straight into a spreadsheet or an AI agent — one row per keyword

Pricing — know your cost before you run

You pay per keyword; there is no monthly fee.

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 listings themselves, one row each? Turn on Include individual listings: 100 listings add $0.20.
• Keywords with zero results are never charged — you still get the row, saying the keyword was not found and what to try instead (see Output).

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. Measured on 2026-08-17 (real run, keyword ポケモンカード リザードン psa10):

{
    "type": "price_summary",
    "keyword": "ポケモンカード リザードン psa10",
    "status": "on_sale",
    "totalListingsFound": 20195,
    "sampledListings": 100,
    "priceJpy": { "min": 5480, "p25": 36350, "median": 82950, "p75": 130500, "max": 599999, "average": 105096 },
    "priceUsd": { "min": 34.42, "p25": 228.31, "median": 521.01, "p75": 819.67, "max": 3768.59, "average": 660.11 },
    "likeCountStats": { "min": 0, "p25": 2, "median": 4, "p75": 9, "max": 115, "average": 7 },
    "exchangeRateJpyUsd": 0.006281,
    "checkedAt": "2026-08-17T17:43:47.268517+00:00"
}

Plus (optional) every listing read, one row each, with title, price (JPY + USD), condition, likes, category, brand, listing date, photo, and a direct paypayfleamarket.yahoo.co.jp URL.

Every row also carries keywordStatus — ok when PayPay has listings under that word, not_found when it has none. (Added 2026-08-18, so it is not in the older run above.)

A keyword PayPay has nothing for still returns a row, free. Measured on 2026-08-18 (live search page for zzzqqxnotarealproduct, built by this Actor from that page):

{
    "type": "price_summary",
    "keyword": "zzzqqxnotarealproduct",
    "status": "on_sale",
    "keywordStatus": "not_found",
    "totalListingsFound": 0,
    "sampledListings": 0,
    "priceJpy": { "min": null, "p25": null, "median": null, "p75": null, "max": null, "average": null },
    "likeCountStats": { "min": null, "p25": null, "median": null, "p75": null, "max": null, "average": null },
    "hint": "Use the Japanese product name (e.g. カメラ for 'camera') — PayPay matches the words sellers type into their listing titles, and those are written in Japanese."
}

(plus checkedAt, as above.) The run ends normally and nothing is charged. A run only fails when the site could not be read at all.

If you misspell a keyword, PayPay searches a corrected word instead — measured on 2026-08-18, Nikonn Z6 bodyy was answered with listings for ニコン Z6 bodyy. Those are a different word's listings, so they are never counted here: the row comes back with 0 results and queryRewrittenTo: "ニコン Z6 bodyy", and you decide whether to run the corrected word.

Note: the public search returns live listings only, so every number here is an asking price, not what an item sold for. Like counts are the demand signal instead.

Use with AI agents

This Actor can be called from the Apify MCP server, so Claude, ChatGPT and other MCP-connected agents can look up Japanese asking prices on their own.

Fair use & data

• Reads only publicly visible listing data — no login; no seller information is returned
• Requests are spaced out to keep the load on the site small
• Not affiliated with LY Corporation. Data is provided for market research; verify before large transactions

Roadmap

Category filters, and a side-by-side view against Mercari prices. (Sold prices are not on the list: PayPay Flea Market's public search does not expose them.) Feedback via the Issues tab is very welcome.

If something goes wrong

• Wrong number or a failed run? Open a ticket on the Issues tab. I read every one and reply within 2 business days (Japan time).
• You never get a fake "empty" result. If the site can't be read, the run fails and says so.
• No results = no charge. You only pay for results you actually get.
• Checked every week. An automatic test runs this tool weekly; if the site changes, I fix it.
• Public pages only. No login, no personal data, and it goes easy on the site.

More tools by the same author

• Mercari Japan Sold Prices — What Items Really Sell For
• Yahoo! Auctions Japan Sold Prices — Median, Range, Bids
• Japan Used Camera & Lens — Dealer Price vs Sold Price
• Japan Figure & Gunpla — New Price vs Used Sold Price
• Used iPhone & Android Prices Japan — Dealer vs Sold
• Yahoo, Mercari & PayPay Japan — Same Item, 3 Prices
• Mercari & Yahoo Japan Demand — Sold vs Still Listed
• Pokemon Card Japan Sold Prices — Raw vs Graded per Card

All tools (Japan marketplaces, real estate, jobs, racing, prediction markets): https://apify.com/jpmarketdata

Disclaimer

Unofficial, independent tool — not affiliated with, endorsed by, or sponsored by PayPay Flea Market. Product names and logos belong to their owners and only say where the data comes from. Data is read from public pages, for market research; check before you act on it.