The Complete Guide to Underpriced AI: Every Feature Explained

Every reseller has the same problem. You're standing in a thrift store, estate sale, or flea market holding an item and wondering if it's worth buying.

Underpriced AI answers that in seconds. Snap a photo, and the app tells you exactly what the item is selling for across multiple platforms, based on real sold data, not guesses.

But scanning items is just the beginning. Here's everything the app can do, and which features come with each plan.

Scanning and Identification

Photo Scanning

The core feature. Take a photo with your phone camera or upload an image from your gallery. The AI identifies the item by name, brand, model, era, production method, and condition. It returns a price range based on actual market data.

For better scans:

• Take photos with good lighting and a clean background
• Include maker's marks, labels, or signatures
• Use the hints field to add details you already know (brand, era, material)
• Multiple angles help the AI catch details it might miss from one shot

Barcode Scanning

For books, CDs, and vinyl, scan the barcode (ISBN, UPC, or EAN) for an exact match. The app reads the code with your camera. It pulls the right title and edition before pricing.

Batch Scanning

Upload up to 10 photos at once. Each photo is scanned as a separate item. This helps when you've just loaded up at an estate sale and want to price everything at once. Each scan uses one credit from your plan.

Available on: All plans

Browser Extension

Install the Chrome or Firefox extension to scan items directly from online auction listings, eBay, or any webpage with an item photo. Click the extension icon while viewing a listing, and it pulls the image and runs a scan. It's useful for deciding whether to bid on online auctions.

Available on: All plans

Scan from URL

On desktop, paste any image URL or listing URL into the scan page. The app fetches the image and runs the same AI analysis.

Available on: All plans

Pricing and Market Data

This is where Underpriced AI goes beyond a simple identifier. Every scan returns the following.

Price Range

A low, suggested, and high price based on what the item actually sells for. This is pulled from real sold listings, not a guess.

Sold Comparables from 6 Platforms

The app searches recently sold items on eBay, and adds Poshmark, Mercari or Grailed sales for the categories that sell there, plus catalog sources such as Discogs and PriceCharting for records and games. Each comparable shows the title, sold price, platform, date, and a link to the original listing so you can verify it yourself.

Live Listings

See what the same item is currently listed for on eBay. These are active listings with prices and links. Useful for pricing competitively.

Market Saturation Analysis

The app analyzes supply and demand: how many active listings exist versus how many sold recently. A "low saturation" rating means the item is in demand with little competition, so list it now. "High saturation" means the market is flooded and you might want to wait or price aggressively.

Sell-Through Rate

Category-specific sell-through rates tell you the likelihood of your item actually selling. A vintage Pyrex dish has a different sell-through rate than a vintage starter jacket.

Platform Fee Calculator

See estimated take-home prices after platform fees for eBay, Poshmark, Mercari, Facebook Marketplace, and Etsy. No more mental math trying to figure out what you'll actually pocket.

Price Alerts

Once you've scanned an item, the app monitors its market value weekly. If the value changes by more than 15%, you get notified. Useful for items you're holding and waiting for the right time to sell.

Available on: All plans

Reprice / Refresh Value

Prices move. Open any past scan and tap Refresh value to re-run the market research and update the estimate, no new photo needed. You can also batch-refresh your unsold inventory from the Scans page so your prices never go stale.

Listing Tools

AI-Generated Listing Content

Every scan generates a ready-to-use eBay title (optimized for search) and a detailed description. Copy and paste, or let the app publish directly.

eBay Quick List

One-click listing to eBay. The app takes your scan results, title, description, price, category, and photos, and creates an eBay listing directly from the scan results page. Connect your eBay account in settings and list without ever opening eBay.

Supported eBay sites: US, UK, Canada, Australia, Germany, France, Italy, Spain, Netherlands, and Belgium (10 marketplaces).

Bonanza Integration

Same one-click listing flow, but for Bonanza. Connect your account and publish listings directly.

CSV Export

Download all your scans or inventory items as a CSV file. Includes item names, brands, prices, descriptions, tags, and image URLs. Use it to:

• Import into cross-posting tools like Vendoo or Crosslist
• Track inventory in a spreadsheet
• Share with a business partner

Available on: All plans

Inventory Management

Items Dashboard

Every item you save goes into your inventory, viewable as a grid (photos), list (compact), or table (spreadsheet-style). Search, filter by status, and sort by value, date, or title.

Death Pile

The reseller term for "stuff I bought but haven't listed yet." The Death Pile feature ranks your unlisted items by profit potential and how long you've been sitting on them, so you know what to list first.

Purchase Price Tracking

Record what you paid for each item. The app calculates your potential profit (estimated value minus cost) and shows it on every item card.

Profit and Loss

When you mark an item as sold, enter the actual sale price. The app tracks your real profit including purchase cost, shipping, platform fees, and other expenses.

Status Tracking

Items flow through statuses: Pending, Analyzed, Listed, Sold, and Archived. Filter your inventory by status to see what needs attention.

Storage Locations

Create hierarchical storage locations (e.g., "Garage > Shelf 3 > Bin A") and assign items. Know exactly where everything is when it sells.

Storage locations available on: Pro Plus and above

Custom Tags

Tag items with custom labels for your own organization system. Filter and search by tag.

Tags available on: Pro Plus and above

Bulk Operations

Select multiple items and archive, delete, or assign storage locations in one action.

Bulk operations available on: Pro Plus and above

Analytics Dashboard

The analytics page gives you a bird's eye view of your reselling business:

• Portfolio Value: total estimated value of your inventory
• Revenue and Profit Trends: monthly charts showing what you're making
• Sell-Through by Category: which categories sell best for you
• Category Performance: compare ROI across different item types
• Inventory Aging: how long items have been sitting (and which ones to discount or relist)
• Sourcing ROI: which sourcing locations (thrift stores, estate sales) give you the best returns

Available on: Pro Plus and above ($29/mo)

Estate and Sale Finder

Enter your ZIP code once and it opens EstateSales.NET, GSALR, YardSaleSearch and AuctionZip already searched to your area, so nearby estate sales, garage sales and auctions are a tap away when you plan a sourcing route.

Available on: Pro Plus and above ($29/mo)

Account Features

Two-Factor Authentication (2FA)

Protect your account with Google Authenticator, Authy, or any TOTP app. Set up in Settings.

Push Notifications

Get notified about price alerts, new features, and important account updates right on your phone.

Dark Mode

Toggle between light and dark themes. Your eyes will thank you during late-night listing sessions.

Plans and Pricing

Every new account gets one free scan, no card required. After that:

Starter, Pro, Pro Plus, and Business are available monthly or yearly (save 20% with annual billing). Need more scans without upgrading? Scan packs start at $3 for 5 scans, 15 for $7, or 30 for $12. Credits never expire.

Mobile Apps and Extensions

• iOS: available on the App Store
• Android: available on Google Play
• PWA: add to your home screen from any mobile browser for an app-like experience
• Chrome Extension: scan items from any webpage
• Firefox Add-on: same extension, for Firefox users

Frequently Asked Questions

Do I have to subscribe, or can I just buy scans as I go?

You can buy credit packs instead of subscribing. Packs start at $3 for 5 scans, 15 scans for $7, or 30 for $12, and credits never expire. Every new account gets one free scan with no card required, and there is no free trial beyond that single scan. Subscriptions begin at $5 per month for 30 scans on Starter.

Which plan do I need for the analytics dashboard and Sale Finder?

The analytics dashboard, revenue and profit reports, category performance and sourcing ROI start at Pro Plus, $29 per month. Sale Finder, storage locations, custom tags and bulk operations start at Pro Plus, $29 per month. Scanning, price ranges, sold comps, market saturation, eBay Quick List, batch scanning, the browser extension, CSV export and price alerts are included on all plans.

Can I list items on eBay without leaving the app?

Yes. Connect your eBay account in settings and eBay Quick List publishes the scan results, title, description, price, category and photos, in one click. Ten eBay marketplaces are supported: US, UK, Canada, Australia, Germany, France, Italy, Spain, Netherlands and Belgium. Bonanza uses the same flow, and CSV export feeds cross-posting tools like Vendoo or Crosslist.

Getting the Most Out of Underpriced AI

1. Add hints before scanning. If you know the brand, era, or material, tell the AI. It significantly improves accuracy.
2. Use the Death Pile. Don't let items sit. The longer you hold inventory, the more capital you're tying up.
3. Check market saturation. A high-value item in a saturated market might be harder to sell than a moderate-value item with low competition.
4. Export your data. Use the CSV export to feed your listings into cross-posting tools and reach buyers on every platform.
5. Set up price alerts. If you're holding items waiting for the right price, let the app tell you when the market moves.
6. Connect your eBay account. One-click listing saves hours compared to manually creating listings.
7. Use the browser extension. Before bidding on online auctions, scan the item to know its real market value.

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Underpriced AI is built by a family-owned company for resellers who want to stop guessing and start knowing what things are worth. The tools help you buy smarter and sell faster, from your first thrift store find to hundreds of items across platforms.

Try Underpriced AI on web or mobile, a 5-scan pack is $3, or start on the $5/month Starter plan for 30 scans.