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Update New CardViper updates are live: faster pages, smarter searches, and cleaner card tools. See what changed See What Changed
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CardViper Tools

Collector Tools

Research prices, scout break teams, and grade smarter — all free, no signup required.

Research & Pricing
eBay tools
4 tools
🏟️ New Tool
Team Break Check
Pick a team, year, and product to see what that team's cards are actually selling for on eBay — so you can decide if a spot in a break is worth it before you buy in.
Open Team Break Check
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Card Comp Finder
Search any player, tune your filters, and open eBay sold comps or active listings instantly with affiliate links.
Open Comp Finder
Pack Odds Calculator
Enter product odds and compare hobby vs retail hit chances side by side.
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Condition Checklist
Pre-grading checklist to decide if a card is worth submitting.
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🎲 Also on CardViper
Breaker Tools
Randomizers, draft trackers, and stream utilities for card breakers
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