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Fake Sale Detector Extension
Build a consumer shopping assistant that verifies whether a discount is legitimate using historical price tracking shown directly on retailer pages. The strongest pull is immediate money protection at the moment of purchase, with clear evidence that users already value this more than generic coupon tools.
これが重要な理由
You are shopping online, see a dramatic markdown, and still feel unsure whether the deal is real. Existing tools pile on coupon codes or price-drop badges but rarely tell you if the current offer is actually better than the normal selling price. So you either buy with doubt or open multiple tabs to compare manually. That creates friction on everyday purchases and makes people vulnerable to urgency tactics. A simple, inline price-truth layer solves a highly repeated consumer problem because it works at the exact moment when purchase decisions are made.
- · Frequent online shoppers who buy on large marketplaces and retail sites several times per month and want to avoid fake discounts without doing manual research.向けに構築。
- · 最も可能性の高い収益化モデル: freemium。
痛み · ナラティブ
You are shopping online, see a dramatic markdown, and still feel unsure whether the deal is real. Existing tools pile on coupon codes or price-drop badges but rarely tell you if the current offer is actually better than the normal selling price. So you either buy with doubt or open multiple tabs to compare manually. That creates friction on everyday purchases and makes people vulnerable to urgency tactics. A simple, inline price-truth layer solves a highly repeated consumer problem because it works at the exact moment when purchase decisions are made.
スコア内訳
市場シグナル
市場投入
Desktop-first online shoppers who make at least 5 discretionary retail purchases per month on major marketplaces.
a few hundred thousand reachable early through browser-extension and deal-seeking audiences
SEO long-tail
$4.99/month
100 weekly active users who save at least one product and 20 convert to paid alerts within 30 days
MVPの範囲 · 1～2週間
- Build Chrome extension that detects supported retailer product pages
- Create product-page parser for title, current price, seller, and SKU-like fields
- Set up database schema for daily price snapshots by product URL
- Design simple inline widget showing current price versus historical median
- Launch landing page with email capture and install flow
- Add fake-discount logic using rolling 90-day baseline and threshold rules
- Implement saved-product watchlist with email alerts
- Connect a second retailer to validate multi-site parsing
- Instrument analytics for installs, widget views, and alert signups
- Run a small beta with 20 shoppers and collect accuracy feedback
差別化
失敗する可能性がある理由
自己反論 — 最も重要な信頼のシグナル
- 1Retailers may change page structure often, making maintenance expensive for a small team.
- 2Consumers may like the feature but still expect it to be free because savings tools are often ad- or affiliate-funded.
- 3If the detector mislabels normal promotions as fake, users will stop trusting the product quickly.
エビデンスの概要
AIがこのインサイトをどのように統合したか — 逐語的な引用はありません
The discussion shows repeated enthusiasm for historical price visibility, with roughly ten comments emphasizing fake sales as a frequent problem. Several participants said price history changed buying decisions or would be valuable on its own, while others requested alerts and inline browsing support. This indicates a clear consumer wedge around price-truth verification rather than generic discount discovery.
アクションプラン
コードを書く前に、この機会を検証しましょう
推奨する次のステップ
開発する
強い需要シグナルを検出。本物の課題と支払い意欲を確認 — MVPの開発を始めましょう。
ランディングページ文案キット
実際のRedditコメントから抽出したコピー、そのまま貼り付けられます
見出し
Fake Sale Detector Extension
サブ見出し
Build a consumer shopping assistant that verifies whether a discount is legitimate using historical price tracking shown directly on retailer pages. The strongest pull is immediate money protection at the moment of purchase, with clear evidence that users already value this more than generic coupon tools.
ターゲットユーザー
対象：Frequent online shoppers who buy on large marketplaces and retail sites several times per month and want to avoid fake discounts without doing manual research.
機能リスト
✓ Inline 90-day or 180-day price history on product pages ✓ Fake-discount flag based on historical baseline and current seller context ✓ Verified price alerts for saved products across retailers
どこで検証するか
r/Product Hunt · e-commerce にランディングページのリンクを投稿しましょう — そこがこの課題が発見された場所です。
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