jarvisbox

セール vs クーポン比較

割引率のセールと定額クーポンを比較して、どちらがお得か即座に判定。

How to use

  1. Enter the original full price of the item.
  2. Enter the percentage-off sale discount on the left.
  3. Enter the fixed-dollar coupon amount on the right.

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よくある質問

Is this tool free?
Yes, completely free with no signup required.
Does my data leave my device?
No. All calculations happen in your browser — nothing is sent to a server.
Does it work on mobile?
Yes. The tool is mobile-first and works on any modern browser.

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