Underpriced AI
Snap a photo, get instant resale value with AI
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Hey HN, I built Underpriced AI to solve a problem I had as a part-time reseller: standing in a thrift store trying to figure out if something is worth buying. How it works: - Snap a photo of any item - AI identifies the brand, model, maker, era, etc. - Pulls recent sold prices from eBay and other marketplaces - Gives you an instant valuation with confidence score You can also generate SEO-optimized eBay listings and publish directly from the app. Tech stack: Next.js, Claude API for vision/analysis, eBay API for market research and listing. The "Quick Scan" feature is designed for mobile – get a price check in seconds while you're out sourcing. Free tier available. Would love feedback from anyone in the reselling space or who's worked on similar pricing/valuation problems. https://underpricedai.com
HN · launched Jan 3, 2026 · 10 upvotes (top 50%) · 0 views
Niche: visual scanning and appraisal apps · 63 launches, 11 in the last 7 days ▲ +22% · Explore this niche →
Category and tags
- Retail & commerce
- Marketplace
- B2C
- AI-native
- Commercial product
Visit website ↗ Source listing ↗
More like this: all 63 launches in visual scanning and appraisal apps →
Could you build this?
Yes The application is a standard mobile/web wrapper that captures an image, queries a multimodal LLM (like Claude) for item identification, and queries marketplace APIs (eBay, Mercari) for sold comps.
Discussion
4 comments analyzed.
Competitors mentioned: Gemini app
Concerns raised: Appears to be a fake replica of another app, Copied existing app name, Underpriced/sketchy pricing strategy
Feature requests: Allow free scanning before signup, Add France as country option
Competitors
Other products that read as similar to this one : 430 launches clear the similarity bar, closest 8 shown.
Attention rank: #155 of 431 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 65 days after the earliest competitor.
- ThriftBuddy: Resale Scanner · ph · 2026-10-17 · 2 upvotes · similarity 0.57
- VendorSnap · ph · 2026-09-20 · 2 upvotes · similarity 0.55
- Thrift Scout · ph · 2026-10-29 · 1 upvotes · similarity 0.53
- SellRight · ph · 2026-10-02 · 1 upvotes · similarity 0.52
- Prelo · ph · 2026-10-21 · 1 upvotes · similarity 0.51
- Resale IQ · ph · 2026-10-07 · 1 upvotes · similarity 0.51
- Cashd · ph · 2026-09-14 · 1 upvotes · similarity 0.51
- Resell-io · ph · 2026-10-06 · 1 upvotes · similarity 0.51
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.