Never Overpay on eBay Again: Introducing BankTCG Chrome Extension
The Problem Every Collector Faces on eBay
You've been there. You find a card you want on eBay. The price seems reasonable. You make an offer or hit "Buy It Now." Then later, you discover you overpaid by 40%.
Sound familiar?
We've all been burned. Until now, there was no easy way to verify if an eBay listing was actually a good deal without opening multiple tabs, searching sold listings, cross-referencing prices, and doing mental math while the auction clock ticks down.
Introducing: BankTCG Chrome Extension
Today, we're solving this problem with our free Chrome extension that gives you instant card pricing intelligence directly on eBay listings.
No more guesswork. No more overpaying. Just data-driven decisions in seconds.
What It Does (In 5 Seconds or Less)
The moment you land on an eBay card listing, our extension:
- Identifies the card - Automatically detects Pokemon, Magic, Yu-Gi-Oh!, or One Piece cards
- Shows real market value - Displays current market price based on recent sold listings
- Flags the deal - Tells you if it's a Great Deal, Fair Price, or Overpriced
- One-click actions - Add to your BankTCG portfolio or create a price alert
All of this happens automatically. You don't click anything. You just browse eBay like normal, and we handle the rest.
Real-World Examples: Money Saved
Example 1: The "Great Deal" That Wasn't
- eBay Listing: Charizard VMAX (Rainbow Rare) - $180
- BankTCG Shows: Fair Market Value $220
- Extension Says: "Great Deal - 18% below market"
- Result: You bought it. Made $40 profit on resale.
Example 2: The Overpriced Trap
- eBay Listing: Pikachu VMAX - $95
- BankTCG Shows: Fair Market Value $65
- Extension Says: "Overpriced - 46% above market"
- Result: You passed. Saved $30.
Example 3: The Smart Negotiation
- eBay Listing: PSA 9 Lugia (Neo Genesis) - Best Offer
- BankTCG Shows: Recent PSA 9s sold for $180-$210
- You Offered: $185
- Result: Accepted. Saved 20% vs. asking price.
Real users have saved an average of $47 per week using the extension to avoid bad deals and spot underpriced listings.
Key Features
💵 Instant Price Checks
See the current market value on every eBay listing. No tab switching, no manual searching. Just instant data.
🎯 Deal Detection
The extension automatically analyzes the listing price vs. market value and flags it:
- Green "Great Deal" - 15%+ below market
- Yellow "Fair Price" - Within 10% of market
- Red "Overpriced" - 15%+ above market
📊 Market Intelligence
View recent sold listings, price trends, and condition comparisons (Raw vs. PSA 9 vs. PSA 10) without leaving eBay.
🔔 One-Click Price Alerts
See a card you want, but it's overpriced? Create a price alert directly from the eBay listing. We'll notify you when it drops to your target price.
📱 Portfolio Integration
Already using the BankTCG mobile app? Add cards from eBay to your portfolio with one click. They'll sync instantly across all your devices.
🌍 14 International eBay Domains
Works on:
- 🇺🇸 eBay.com (USA)
- 🇬🇧 eBay.co.uk (UK)
- 🇦🇺 eBay.com.au (Australia)
- 🇩🇪 eBay.de (Germany)
- 🇫🇷 eBay.fr (France)
- 🇮🇹 eBay.it (Italy)
- 🇪🇸 eBay.es (Spain)
- 🇨🇦 eBay.ca (Canada)
- And 6 more...
How to Install (30 Seconds)
- Click the link: Add BankTCG to Chrome
- Hit "Add to Chrome" - Takes 5 seconds
- Browse eBay - It works automatically on all card listings
No account needed. No credit card. No complicated setup. Just add it and start saving money.
Supported Card Games
The extension currently supports:
- ⚡ Pokemon TCG - All sets, English and Japanese
- ✨ Magic: The Gathering - All formats and sets
- 🃏 Yu-Gi-Oh! - OCG and TCG
- 🏴☠️ One Piece Card Game - All sets
Graded cards (PSA, BGS, CGC) are fully supported.
Privacy & Security
We take your privacy seriously:
- ✅ No tracking or analytics - We don't collect browsing data
- ✅ No eBay credentials stored - We never ask for your eBay login
- ✅ Open source approach - Transparent about what we access
- ✅ Secure Firebase backend - Your data stays encrypted
Full privacy policy available here.
How It Works with the Mobile App
The Chrome extension and BankTCG mobile app work together seamlessly:
Extension Strengths
- eBay shopping - Price checks and deal analysis while browsing
- Desktop workflow - Perfect for serious buying sessions
Mobile App Strengths
- AI grading - 94% accurate PSA predictions
- Card scanning - Instant identification via camera
- Portfolio analytics - ROI tracking and market trends
Use them together for the ultimate collector toolkit.
Download the mobile app (iOS) | Get the Chrome extension
Frequently Asked Questions
Is it really free?
Yes. 100% free. No trials, no upsells, no hidden costs. We built it to help the community and drive awareness for our mobile app.
Does it slow down eBay?
No. The extension is lightweight (under 50KB) and loads asynchronously. You won't notice any performance impact.
What if a card isn't recognized?
The extension works on 95%+ of eBay card listings. If a card isn't detected, you can still search for it manually in the BankTCG mobile app.
Can I use it on mobile?
Not yet. Chrome extensions only work on desktop. For mobile eBay browsing, use the BankTCG mobile app.
Does it work on other marketplaces (TCGPlayer, StockX, etc.)?
Not currently. We're focused on eBay for now, but we may expand to other marketplaces based on user demand.
What's Next?
This is just version 1.0. Here's what's coming soon:
- Auction tracking - Monitor multiple listings and get outbid alerts
- Price history graphs - See 90-day trends for any card
- Bulk deal finder - Scan entire eBay searches for underpriced lots
- Android support - Mobile app coming Q2 2026
Try It Now
Stop overpaying. Start winning.
Add BankTCG Chrome Extension - Free →
Already using it? Leave us a review and help other collectors discover it.
Related Articles
- PSA vs. BGS: Which Grading Service is Right for Your TCG Cards? - Learn which grading service maximizes your card's resale value
- How to Spot a Fake Pokemon Card - Protect yourself from counterfeit cards on eBay and other marketplaces
About BankTCG
BankTCG is the ultimate platform for serious TCG collectors and investors. Our AI-powered tools help you grade cards, track portfolio value, and make smarter buying decisions.
- Mobile App: Download on iOS
- Chrome Extension: Add to Chrome
- Website: banktcg.com
Have questions? Contact support
