Amazon Japan Price Tracker
Track Amazon Japan prices, view complete price history, and get instant drop alerts — free, unlimited, in JPY (¥).
Amazon prices fluctuate by 15–40% throughout the year, with the steepest drops clustered around a small number of seasonal events.
Updated
Popular Products on Amazon Japan
![Electric Ladyland (Ogv) [Analog]](https://m.media-amazon.com/images/I/81ulYvd6icL._SL1500_.jpg)
Electric Ladyland (Ogv) [Analog]
¥6,249
UNIGT ベルトチェンジツール クラッチカバー取り外しツールキット Polaris XP/RZR XP4 1000/RZR S 900対応 - コンボパッケージ
¥7,366
Deadly Class Volume 1: Reagan Youth
¥2,978
Diapers Size 5, 48 Count - Pampers Pure Protection Disposable Baby Diapers, Hypoallergenic and Unscented Protection, Super Pack (Packaging & Prints May Vary)
¥10,486
Gruv 6243301 ミディアムデューティ 空気圧ドアクローザー White Koch Industries
¥9,330
![[Giekis] Lee Men's Big & Tall Legendary Relaxed Straight Jean, Night Shade, 44W x 29L](https://m.media-amazon.com/images/I/51Iawf0hb9L._SL1500_.jpg)
[Giekis] Lee Men's Big & Tall Legendary Relaxed Straight Jean, Night Shade, 44W x 29L
¥8,327
GOLFPRIDE(ゴルフプライド) ND マルチコンパウンドMCC バックライン無 MCC-BK ブラック M60R
¥2,100
![Shang-Chi and the Legend of the Ten Rings [Region Free] [Blu-ray]](https://m.media-amazon.com/images/I/81G7nqYuJyL._SL1500_.jpg)
Shang-Chi and the Legend of the Ten Rings [Region Free] [Blu-ray]
¥4,870
chicka-d レディース コード付き クルー フリース スウェットシャツ プライマリーチーム アイコン ラテ
¥9,124
Ninestar MYCARTRIDGE TN-296 マゼンタ キヤノン 互換トナー 大容量 対応機種 : HL-3140CW HL-3170CDW MFC-9340CDW DCP-9020CDW
¥1,980
Miracle Sealants GRT SLR、グラウトシーラー、6オンス
¥5,667
TEKTON 7075 Shoe Handle Wire Brush
¥4,515
エムテートリマツ 半月とんかつ網 足無 2074801
¥1,379
Satco cft42 W / 4p / 841 / ENV – s8356
¥6,075
CakJuice No Trespassing Tin Sign We are Tired of Hiding The Bodies メタルサイン 希少 限定ビンテージ 12x8インチ
¥3,003
Medline シャワーチェア 背もたれとパッド入りアームレスト付き - 耐荷重350ポンド バスベンチ、シート、独立した大人、高齢者、障害のある患者のためのスツール グレー
¥14,246
Goodnight Punpun, Vol. 5
¥4,837
Braun Oral-B Cross Action Replacement Toothbrush Heads by Oral-B
¥10,623
Future Noir Revised & Updated Edition: The Making of Blade Runner
¥3,034
![LIVEFORMS: FAUNA LIVE IN LONDON (GATEFOLD BLACK 2LP) (輸入盤) [Analog]](https://m.media-amazon.com/images/I/81XULT3ODYL._SL1500_.jpg)
LIVEFORMS: FAUNA LIVE IN LONDON (GATEFOLD BLACK 2LP) (輸入盤) [Analog]
¥5,968
Moab Slickrock メタリックパール 260 ファインアート 超滑らかで滑らかな砂岩 8.5 x 11インチ インクジェットペーパー ディープダークブラック 超高輝度ハイライト用 (25枚)
¥11,015
Motorola Edge 2023用ケース ディフェンダーケース 高耐久 耐衝撃 防塵 3イン1 頑丈な保護電話カバー Motorola Moto Edge 2023用 (ブラック)
¥3,555
爬虫類温度計と湿度計、2個 デジタル湿度計 粘着爬虫類テラリウム比重計 ひげを生やしたドラゴンタンクアクセサリー ペット湿度計用品 ヒョウ紋付きヤモリ、ヘビ、トカゲ用
¥3,231
RK International RKI RB-10 C オイル磨きブロンズ R.K. インターナショナル PH 4620 RB 10 3/4インチ センター装飾アプライアンスプル
¥34,155
Browse Amazon Japan by Category
How does RiverPrice track Amazon Japan prices?
RiverPrice records every price change on Amazon Japan listings, archives it per ASIN, and renders it as an interactive chart so shoppers can see the full historical price before they buy.
Paste any Amazon Japan product URL to see the complete price history, current listing price in JPY, and historical lows. Set a target price and we email you when it drops — no account signup required until you set your first alert. Price data is sourced from Keepa, which has tracked Amazon Japan continuously since 2011.
Every Amazon marketplace is tracked independently, so the prices on your Amazon Japanproduct page reflect the exact price you'd pay on Amazon's Japan site — not the US version. Currency and availability match the local marketplace.
When do Amazon Japan prices typically drop?
The largest drops cluster around 4 anchor events each year: Black Friday, Cyber Monday, Amazon Prime Day, Back-to-School.
Smaller category-specific dips appear monthly, particularly on kitchen, home, and tool categories. Lightning Deals and limited-time promotions show up as short, sharp dips on the price chart. The interactive history on each product page lets you see whether today's price is above or below the historical average, and exactly when the last drop happened.
Why use RiverPrice instead of CamelCamelCamel or Keepa?
- Complete price history going back years, rendered as an interactive chart with no account or browser extension required.
- Free price alerts emailed instantly when a product hits your target price. Unlimited alerts; no paid tier.
- Per-product analysis — see whether today's price is above or below the historical average, and when the last drop happened.
- Mobile-first PWA — install RiverPrice as an app on your phone for push notifications when prices drop.
- No account to browse — just paste a URL and view history immediately.
Frequently asked questions about Amazon Japan price tracking
- When do Amazon prices typically drop?
- The largest drops cluster around four anchor events each year: Black Friday, Cyber Monday, Amazon Prime Day, and Back-to-School. Smaller category-specific dips appear monthly. RiverPrice tracks every price change so you can see exactly when each product hit its lowest point.
- Is RiverPrice free to use?
- Yes. Tracking unlimited products, viewing complete price history, and receiving email price-drop alerts are all free with no account required to browse. An account is only needed when you set your first alert.
- How accurate are the price history charts?
- Price data is sourced from Keepa, the same dataset used by professional Amazon sellers and analysts. Prices are updated frequently and archived as a permanent historical record per ASIN per marketplace.
- Do you support price tracking across Amazon marketplaces?
- Yes. Each Amazon marketplace is tracked independently, with prices in the local currency. Tracking the same product across multiple regions is supported.