GCI Index
614.20
prev-0.00%Last updated 06/07/2026, 07:00 AM
What is GCI?
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TCG Market Index
We aggregate actual sale prices collected from external markets and visualize the overall trading card market trend as a single index value (GCI).
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Per-Card Index
We calculate independent index values for individual cards, tracking them by condition and rarity to monitor relative price movements.
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Confidence Transparency
Every index value is shown with a confidence level (HIGH/MED/LOW) based on sample count and outlier ratio. Indices with insufficient data are clearly marked as reference values.
Market List
Marketboard β
Latest prices and change rates for all tracked cards, categorized by confidence.
Card Search
Cards β
Catalog showing per-card index, sample count, and confidence level.
By Game
Games β
Browse by game β PokΓ©mon TCG, One Piece Card Game, and more.
Daily Report
Daily Recap β
Daily market summary with top gainers, losers, and volume spikes.
Index History
Index History β
GCI index trend chart. View 30-day and 90-day price movement.
Email Updates
Newsletter β
Receive daily market summaries by email. Free, cancel anytime.