Underpriced – Reseller Profit Checker by Underpriced.App - AI Profit Checker for Resellers
Analyze marketplace listings with market evidence, fee-aware profit estimates, deal scores, and risk flags.
Some features may require paymentSome features may require payment
Available on Firefox for Android™Available on Firefox for Android™
7 Users7 Users
Scan the QR code to open this extension in Firefox for Android
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About this extension
Analyze a listing before you buy. Know the potential profit before you source.
Underpriced helps resellers capture the marketplace listing they’re viewing and turn it into a practical buying analysis. Review estimated resale value, available comparable listings, selling costs, potential profit, deal quality, and possible risk signals—all in one place.
📸 HOW IT WORKS
• Open a marketplace or product-listing page
• Click the Underpriced extension icon or choose “Analyze This Listing”
• Capture the visible page or select the area containing the item details
• Add more screenshots when important information appears elsewhere
• Submit the capture and review the analysis
📊 MARKET EVIDENCE & SOLD COMPS
• See an estimated market range and data-confidence indicator
• Review available sold and active comparable listings
• Compare price, condition, shipping, and listing details
• Refine the comps search if the initial match needs improvement
💰 FEE-AWARE PROFIT ANALYSIS
• Confirm the purchase price and expected resale price
• Choose your selling scenario
• Review estimated marketplace fees, shipping, promotion costs, and optional tax reserve
• See estimated net profit, ROI, margin, and a 0–100 Deal Score
⚠ RISK & NEGOTIATION TOOLS
• Surface suspicious pricing, missing details, condition concerns, and authenticity questions
• Review due-diligence suggestions before committing to a purchase
• Get negotiation guidance and an offer strategy
• Treat risk signals as research prompts, not scam-detection or authentication guarantees
📦 KEEP YOUR FLIPS ORGANIZED
• Save analyses to your history
• Add promising purchases to Flip Tracker
• Open AI-assisted listing drafts in your Underpriced dashboard
• Use USD, EUR, GBP, CAD, or AUD
🎯 BUILT FOR RESELLERS
Use Underpriced for online sourcing, local deals, retail arbitrage, vintage finds, collectibles, electronics, apparel, home goods, and other resale inventory. The extension works with many marketplace and product-listing pages.
🔒 PRIVACY & PAGE ACCESS
Underpriced needs access to the page you’re viewing so you can capture listing content. When you request an analysis, relevant screenshots, page URL, and listing context are processed to return your results. We do not sell personal information or use extension data for third-party advertising. See our Privacy Policy for processing, retention, deletion, and service-provider details.
💡 GETTING STARTED
1. Install Underpriced
2. Create or connect your account
3. Open a listing and click the extension icon
4. Capture the relevant details
5. Review the evidence and adjust the selling scenario
Some features and usage limits depend on your plan and data availability. Visit underpriced.app for current plan details.
📧 SUPPORT
Questions? Email support@underpriced.app
Results are estimates based on available data and may vary by item, condition, market, region, and timing. Verify the listing and comparable evidence before buying. Underpriced does not provide financial, tax, legal, appraisal, or authentication advice.
Underpriced.App is independently developed and is not affiliated with other services using the name “Underpriced.”
Underpriced helps resellers capture the marketplace listing they’re viewing and turn it into a practical buying analysis. Review estimated resale value, available comparable listings, selling costs, potential profit, deal quality, and possible risk signals—all in one place.
📸 HOW IT WORKS
• Open a marketplace or product-listing page
• Click the Underpriced extension icon or choose “Analyze This Listing”
• Capture the visible page or select the area containing the item details
• Add more screenshots when important information appears elsewhere
• Submit the capture and review the analysis
📊 MARKET EVIDENCE & SOLD COMPS
• See an estimated market range and data-confidence indicator
• Review available sold and active comparable listings
• Compare price, condition, shipping, and listing details
• Refine the comps search if the initial match needs improvement
💰 FEE-AWARE PROFIT ANALYSIS
• Confirm the purchase price and expected resale price
• Choose your selling scenario
• Review estimated marketplace fees, shipping, promotion costs, and optional tax reserve
• See estimated net profit, ROI, margin, and a 0–100 Deal Score
⚠ RISK & NEGOTIATION TOOLS
• Surface suspicious pricing, missing details, condition concerns, and authenticity questions
• Review due-diligence suggestions before committing to a purchase
• Get negotiation guidance and an offer strategy
• Treat risk signals as research prompts, not scam-detection or authentication guarantees
📦 KEEP YOUR FLIPS ORGANIZED
• Save analyses to your history
• Add promising purchases to Flip Tracker
• Open AI-assisted listing drafts in your Underpriced dashboard
• Use USD, EUR, GBP, CAD, or AUD
🎯 BUILT FOR RESELLERS
Use Underpriced for online sourcing, local deals, retail arbitrage, vintage finds, collectibles, electronics, apparel, home goods, and other resale inventory. The extension works with many marketplace and product-listing pages.
🔒 PRIVACY & PAGE ACCESS
Underpriced needs access to the page you’re viewing so you can capture listing content. When you request an analysis, relevant screenshots, page URL, and listing context are processed to return your results. We do not sell personal information or use extension data for third-party advertising. See our Privacy Policy for processing, retention, deletion, and service-provider details.
💡 GETTING STARTED
1. Install Underpriced
2. Create or connect your account
3. Open a listing and click the extension icon
4. Capture the relevant details
5. Review the evidence and adjust the selling scenario
Some features and usage limits depend on your plan and data availability. Visit underpriced.app for current plan details.
📧 SUPPORT
Questions? Email support@underpriced.app
Results are estimates based on available data and may vary by item, condition, market, region, and timing. Verify the listing and comparable evidence before buying. Underpriced does not provide financial, tax, legal, appraisal, or authentication advice.
Underpriced.App is independently developed and is not affiliated with other services using the name “Underpriced.”
Rated 5 by 3 reviewers
Permissions and data
Required permissions:
- Display notifications to you
- Access browser tabs
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Required data collection, according to the developer:
- Authentication information
- Browsing activity
- Personally identifying information
- Website content
More information
- Add-on Links
- Version
- 2.0.2
- Size
- 161.84 KB
- Last updated
- 7 hours ago (Aug 27, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- End-User License Agreement
- Read the license agreement for this add-on
- Version History
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