Rakuten Japan Seller Competition Monitoring

Rakuten Japan Seller Competition Monitoring Scraper

Real-time visibility into merchant competition, buy box positions, and pricing dynamics across Rakuten Ichiba (rakuten.co.jp).

Designed for e-commerce brand managers, dynamic re-pricing platforms, and competitive analysts monitoring seller behavior on Japan's largest marketplace.

FEATURES

Buy Box Positioning: Track which merchant holds the primary buy box position (buybox_position) and monitor total active sellers (total_sellers) per product catalog ID.

Price & Stock Intelligence: Extract seller listing prices, lowest-price indicators (is_cheapest), and inventory availability (isSoldOut).

Rakuten Points & Multipliers: Monitor base point reward multipliers and calculated Rakuten Point returns across competing offers.

Merchant Quality & Performance: Capture seller shop names, shop IDs, shop review counts, star ratings, and fulfillment shipping costs.

Item Condition Tracking: Differentiate between new and second-hand/used inventory classifications (中古品-非常に良い).

USE CASES

Dynamic Automated Repricing: Monitor competitive price changes and buy box rankings to automatically trigger repricing strategies on Rakuten.

Buy Box Share Analysis: Track seller ownership of the buy box over time across high-velocity product catalog pages.

Authorized Seller & MAP Compliance: Identify non-authorized third-party sellers, gray-market listings, or price-undercutting distributors.

Competitor Inventory & Strategy Tracking: Evaluate competing shop ratings, free shipping eligibility, and point reward promotions.

OUTPUT

Seller From Buybox List

{
  "name": "【中古】Apple 国内版 【SIMフリー】 iPhone 17 256GB ブラック MG674J/A【仙台イービーンズ】保証期間1ヶ月【ランクA】",
  "price": 139980,
  "subtitle": "",
  "url": "https://item.rakuten.co.jp/janpara/97041263-223/",
  "code": "10814235",
  "rancode": "ff0b1e115d84127e07e2eda7f8b0c64a",
  "productUrl": "https://product.rakuten.co.jp/product/-/ff0b1e115d84127e07e2eda7f8b0c64a/",
  "isSoldOut": false,
  "total_sellers": 51,
  "buybox_position": 1,
  "is_cheapest": true,
  "images": [
    "https://thumbnail.image.rakuten.co.jp/@0_mall/janpara/cabinet/itemimg_tempostar/shop223_217/217_0721/97041263-223_1.jpg"
  ],
  "used": true,
  "used_condition": "",
  "shop_name": "じゃんぱら楽天市場店",
  "shop_id": 394812,
  "shop_code": "394812",
  "shop_url": "https://www.rakuten.co.jp/janpara/",
  "shop_reviews": 1684,
  "shop_rating": 4.75,
  "shipping_cost": 0,
  "shipping_estimate_delivery": null,
  "point": 1272,
  "point_base_multiplier": 1,
  "tags": [
    "中古",
    "中古品-非常に良い",
    "送料無料ライン対象商品",
    "アップル"
  ],
  "genres": [
    "中古",
    "中古品-非常に良い",
    "送料無料ライン対象商品",
    "アップル"
  ]
}

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