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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.
Pourquoi c'est important
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.
- · Conçu pour 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..
- · Monétisation la plus probable : freemium.
La douleur · Récit
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.
Détail du score
Signal du marché
Mise sur le marché
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
Périmètre MVP · 1–2 semaines
- 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
Différenciation
Pourquoi cela pourrait échouer
Auto-contre-argument — le signal de confiance le plus important
- 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.
Résumé des preuves
Comment l'IA a synthétisé cet aperçu — pas de citations textuelles
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.
Plan d'Action
Validez cette opportunité avant d'écrire du code
Prochaine Étape Recommandée
Construire
Signaux de demande forts. Vraie douleur et volonté de payer détectées — commencez à construire un MVP.
Kit de Textes pour Landing Page
Textes prêts à coller, basés sur le langage réel de la communauté Reddit
Titre Principal
Fake Sale Detector Extension
Sous-titre
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.
Pour Qui
Pour 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.
Liste des Fonctionnalités
✓ 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
Où Valider
Partagez votre landing page sur r/Product Hunt · e-commerce — c'est exactement là que ces points de douleur ont été découverts.
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