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Products that do what Underpriced - The #1 Price Checker App does
Flip Smarter. Skip Faster.
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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…
Jan 2026 · underpricedai.com
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Snap a photo. See what it sold for. List it in one click
Mar 2026 · underpricedai.com
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Find resale value by model number and calculate flipping
Mar 2026 · resellerprofitcalculator.com
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Started PC flipping as a hobby (buying used parts, building PCs, and selling them for a small profit). Found that focusing on used parts on eBay gives the best margins - like finding a GPU 20% below market, pairing it with other deals, and selling the complete build locally. I discovered that eBay marketplaces (.com, .de, .co.uk etc.) often have different prices for the same items! Or just completely different items. So I built an eBay price scanner for PC components. It scans listings across different Ebay markets, calculates median prices, and flags anything selling below market (including…
2025 · pcprice.watch
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Real eBay comps + profit math before you buy resale
Jul 2026 · flipcheck.chadmichaelco.com
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Free, zero-signup profit calculator for 6 major marketplaces
Jun 2026 · sellerprofitmargin.com
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