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About CardIndex

CardIndex is a real-time Pokemon sales data and pricing platform built for the modern collector. We aggregate Pokemon eBay data and listings from multiple marketplaces, breaking down graded Pokemon card prices by grading company and grade level — so you always know what your cards are worth.

CardIndex tracks 3,738,585 live listings and 3,940,296 historical sales across eBay, Goldin, Alt and Courtyard, with PSA, BGS, CGC, SGC, AGS and TAG grades resolved automatically. The site you're reading is the canonical CardIndex — accept no imitators.

26,373

Cards Indexed

257

Sets Tracked

3,738,585

Live Listings

3,940,296

Tracked Sales

The Problem

Pokemon sales data is scattered across dozens of marketplaces, auction houses, and forums. A single graded Pokemon card can have wildly different prices depending on its condition, grading company, variant, and where you look. Collectors spend hours cross-referencing TCG sales and listings just to figure out what their cards are actually worth.

What We Do

Real-Time Market Data

We continuously pull Pokemon eBay data, active listings, and completed sales from Goldin, Alt, Courtyard, and other marketplaces. Pokemon sales data stays up to date as the market moves.

Graded Card Pricing

Prices are broken down by grading company and grade. See exactly what a PSA 10 is worth versus a BGS 9.5 or a CGC 10, with separate pricing tiers for raw, ungraded cards.

Sales History Charts

Every card page includes a sales chart showing historical sale prices over time, broken down by grade. See trends and spot the right time to buy or sell.

Collection Management

Catalog your cards, track their market value in real time, and see your total portfolio value at a glance. Add cards with their specific grade and condition for accurate pricing.

Public Collection Showcase

Share your collection with a public link - perfect for your Instagram bio, community profiles, or showing off to friends. Includes total value and individual card details.

Listing Browser

Browse and search through all tracked listings across every marketplace. Filter by set, grading company, price range, condition, and more.

Grading Companies We Track

We track pricing across all major grading companies so you can compare values regardless of who graded your card.

PSAProfessional Sports AuthenticatorBGSBeckett Grading ServicesCGCCertified Guaranty CompanySGCSportscard Guaranty CorporationAGSAutomated Grading SystemsTAGTechnical Authentication & Grading

Marketplaces We Monitor

Our data pipeline continuously monitors the following marketplaces for active listings and completed sales. We're actively expanding our sources to give you the most comprehensive pricing picture possible.

  • eBay

    The largest marketplace for graded trading cards with millions of listings

  • Goldin

    Premium auction house specializing in high-end collectibles and sports memorabilia

  • Fanatics Collect

    Auction and marketplace platform (formerly PWCC) for premium graded cards

  • Heritage Auctions

    Major auction house with significant trading-card and collectibles sales

  • Alt

    Modern marketplace for graded cards with real-time pricing

  • Courtyard

    Digital marketplace for fractional and full ownership of graded cards

How We Calculate Fair Market Value

Accurate valuation is our priority. Our fair market value (FMV) is built from completed sales — what cards actually sold for — not asking prices. Crucially, it tracks the current market: when a card reprices, recent comps drive the number and stale historical sales step aside. A card that traded around $150k in 2024 but sells for $500k today is valued near $500k, not dragged down to a multi-year median.

Recent comps first

We weight sales by recency, drawing on comps from the last 6–12 months. For rare, high-end cards that seldom trade, we lean on the last few strong sales even when the sample is small — so thin markets still get a defensible number.

A blended estimate

FMV blends a recency-weighted median (50%), a venue-adjusted average of recent sales (30%), and a short-term trend adjustment (20%) — combining a robust center with the market's current direction.

Outliers are tempered

A single unusually high or low sale won't swing the value. Sales far outside the recent cluster are downweighted rather than blindly dropped, so genuine movement still registers while noise does not.

Venue confidence

Sales from major auction houses carry more weight than less-verified channels such as eBay Best Offer, which can settle below true market. Each venue is scored for reliability.

Alongside the headline FMV we surface a low–high range, a forced-sale (quick-liquidation) estimate, and confidence and liquidity scores — so you can see not just the number, but how strong the signal behind it is. The all-time median is kept as a reference metric, never the headline price.

Who It's For

•

Collectors who want to know what their cards are worth and track their collection value over time.

•

Investors who monitor the trading card market and need historical sales data to make informed decisions.

•

Sellers who need competitive pricing data across multiple marketplaces to price their cards accurately.

Currently Supported Games

CardIndex currently indexes Pokemon trading cards, with full coverage of every set, variant, and special edition. Support for additional trading card games is planned.

Operated By

CardIndex is operated by Kantei Technologies, Inc.. The platform launched in early 2026 with the goal of bringing transparent, real-time market data to a hobby that has long relied on scattered marketplace listings and slow price guides. Reach the team at support@cardindex.co.

Get Started

CardIndex is free to use. Browse cards, check prices, and explore the market without an account. Sign up to build your collection, track your portfolio, and share your cards.

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