Shopping across Amazon JP, Rakuten, and Yahoo! Shopping means juggling three separate tabs, three different layouts, and three sets of prices for the same product. dealJP fixes that — one feed, the deepest discount surfaced automatically.
dealJP earns a small commission when you click through and make a purchase. This never influences which deals appear or how they are ranked — the price data comes straight from the marketplace APIs. See the full affiliate disclosure for details.
dealJP is an independent project — not a corporation, not a funded startup. It is designed, built, and maintained by a single developer who got tired of manually comparing prices. Feedback and suggestions are always welcome via the contact page.
Throughout the day, straight from each marketplace's official API — most listings refresh every few hours. A product page shows exactly when its price was last confirmed.
Marketplace prices change constantly — a sale can start, end, or stock can run out between our last check and your visit. Always confirm the final price on the marketplace before buying.
Through affiliate commissions — when you click through and buy something, we may earn a small percentage from the marketplace, at no extra cost to you. This never changes which deals are shown or how they're ranked. See the full affiliate disclosure for details.
Rakuten and Yahoo! Shopping reward purchases with loyalty points you can spend on a future order. The percentage shown is an estimate of those points converted to yen — it's not an extra discount at checkout.
No. Browsing, comparing prices, and saving deals all work with no sign-up, no email, and no account — the heart icon on a card saves it locally in your browser.