Underpriced AI for writers
Everything you need to write about Underpriced AI accurately: the one-liner, the facts, copy-and-paste boilerplate, a founder quote, and assets. Questions or a fact-check? frank@underpricedai.com.
The one-liner
Underpriced AI turns a photo of any item into an instant resale-value estimate backed by real sold prices across eBay, Poshmark, Mercari, and more, so resellers can decide what is worth buying and what to charge, then list it in a couple of taps.
What makes it different
- Real sold prices, not asking prices. The estimate is built from completed sales, and every scan shows the actual sold listings behind it so you can verify before you buy.
- Any category, real sold comps. Most photo-pricing tools are eBay-only or clothing-only. Underpriced AI prices anything and pulls comps from eBay, Poshmark, and Mercari, plus category specialists.
- Net profit, not gross. It subtracts each platform's fees so the number you see is real take-home profit, the figure that actually decides a buy.
- A full workflow, not just a checker. It writes the listing and publishes straight to eBay, with a browser extension to cross-list to Facebook, Poshmark, and Mercari, plus inventory and profit tracking.
Fast facts
| Product | Underpriced AI, an AI pricing and listing app for resellers |
|---|---|
| Website | underpricedai.com |
| What it does | Snap a photo of an item and get an instant resale-value estimate backed by real sold prices, plus net-profit math, listing generation, and one-click publishing |
| Platforms | iOS app, Android app, and web app |
| Pricing data from | eBay, Poshmark, and Mercari, plus category specialists (sneakers, watches, and price guides for books, games, cards, and vinyl) |
| Categories covered | Any physical item, no barcode required (clothing, jewelry, furniture, electronics, toys, kitchenware, books, collectibles, and more) |
| Pricing | First scan free. Pay-as-you-go credit packs from $4, or subscriptions from $5/month (Starter) through Pro, Pro Plus, and Business tiers |
| AI model | Claude Opus 4.8 vision |
| Founder | Frank Kratzer, solo founder (software engineer, 30+ years) |
| Category | Reseller tools, thrifting and sourcing, resale price research |
Founder quote
“Resellers were making buy-or-pass calls off asking prices and guesswork. We built Underpriced AI so anyone can point a phone at an item and instantly see what it actually sells for, across every marketplace that matters, minus the fees. It turns sourcing from a gamble into a decision.”
Boilerplate (copy and paste)
Short (one line)
Underpriced AI is a photo-based pricing app that shows resellers what an item actually sells for across eBay, Poshmark, Mercari, and more.
Medium (roundup blurb)
Underpriced AI lets resellers snap a photo of any item and instantly see its resale value backed by real sold prices across eBay, Poshmark, and Mercari, with net-profit-after-fees math. Unlike barcode scanners it needs no barcode, and unlike eBay-only or clothing-only tools it prices any category. It also writes the listing and publishes to eBay. First scan is free; credit packs start at $4 and subscriptions start at $5/month. On iOS, Android, and web.
Long (about paragraph)
Underpriced AI is an AI-powered pricing and listing app built for resellers who source at thrift stores, garage sales, and estate sales. A user photographs an item and the app identifies it and returns an instant resale-value estimate grounded in real completed-sale data from eBay, Poshmark, and Mercari, plus category specialists for sneakers, watches, books, games, cards, and vinyl. The free first scan shows the value range; on any paid plan every estimate links to the sold listings behind it, and the profit figure is calculated net of each marketplace's fees. Beyond pricing, the app generates listings, publishes directly to eBay across ten marketplaces, cross-lists to other platforms via a browser extension, and tracks inventory, profit, and ROI. Underpriced AI runs on iOS, Android, and the web, with a free first scan, pay-as-you-go credits from $4, and subscriptions from $5/month.
Links & assets
- Website: underpricedai.com
- App Store: Underpriced AI on the App Store
- Google Play: Underpriced AI on Google Play
- Logo & social image: og-image.png
- Comparison of thrift-pricing apps: Best Thrift Store Apps
Press contact
Frank Kratzer, founder. Reach out for a quote, a demo, a fact-check, or high-res assets: frank@underpricedai.com.