GemnetV4

Estimates PSA grades on cards and PCGS/NGC grades on coins using AI vision. Identify valuable ungraded collectibles.

Grade Estimator - AI-Powered Collectible Grading Assistant Grade Estimator uses AI vision to estimate PSA grades for collectible cards and PCGS/NGC grades for coins. Identify valuable ungraded items on eBay, TCGPlayer, and CardMarket. Key Features: - Dual Grading Modes: Switch between card grading (PSA 1-10) and coin grading (MS-70 to PO-1) - AI-Powered Analysis: Uses advanced vision AI to assess condition factors including: - Cards: Centering, corners, edges, and surface quality - Coins: Strike, surface preservation, luster, wear, and marks - Smart Detection: Automatically identifies already-graded items and skips multiple-item listings - Price Estimates: See estimated market value at the highest grade (PSA 10 for cards, MS-70 for coins) - Grading Cost Calculator: View estimated grading costs from PSA and PCGS/NGC based on item value - Batch Scanning: Process listings in batches of 10 with automatic sorting by grade and confidence - Grade Caching: Grades are saved so you don't need to re-scan the same items - Customizable Settings: Adjust badge position, opacity, tooltip delay, and more - Keyboard Shortcut: Quick scan with Ctrl+Shift+S (Cmd+Shift+S on Mac) Perfect For: - Collectors looking for undervalued raw cards and coins - Dealers identifying grading opportunities - Anyone buying collectibles online who wants condition insights How It Works: - Enter your OpenAI API key in the extension settings - Visit eBay, TCGPlayer, or CardMarket search results - Click the scan button or use the keyboard shortcut - View grade estimates with confidence levels and detailed condition analysis - Sort listings by highest grades to find the best opportunities Privacy & Transparency: - Your API key is stored securely in Chrome's sync storage - All analysis happens through OpenAI's API - We use affiliate links to keep the extension free (disclosed in settings) - Full privacy policy available in extension settings - Start finding hidden gems in collectible listings today. Note: Requires an OpenAI API key. The extension uses your API credits for analysis. Usage statistics are tracked so you can monitor costs.