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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.
Por que isso importa
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.
- · Feito para 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..
- · Monetização mais provável: freemium.
A Dor · Narrativa
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.
Detalhe da pontuação
Sinal de Mercado
Go-to-Market
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
Escopo do MVP · 1–2 semanas
- 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
Diferenciação
Por que isso pode falhar
Auto-refutação — o sinal de confiança mais importante
- 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.
Resumo das evidências
Como a IA sintetizou este insight — sem citações literais
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.
Plano de Ação
Valide esta oportunidade antes de escrever código
Próximo Passo Recomendado
Construir
Sinais de demanda fortes. Há dor real e disposição a pagar — comece a construir um MVP.
Kit de Textos para Landing Page
Textos prontos para colar, baseados na linguagem real da comunidade Reddit
Título Principal
Fake Sale Detector Extension
Subtítulo
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.
Para Quem É
Para 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.
Lista de Funcionalidades
✓ 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
Onde Validar
Compartilhe sua landing page no r/Product Hunt · e-commerce — é exatamente lá que esses pontos de dor foram descobertos.
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