What We Do

About Card Prices

Card Prices is a pricing and inventory platform for the collectible trading card market. Look up what any card is worth — every printing, raw and graded, with listings and recent sales from the largest card marketplaces side by side. Prices need no account and are never behind a paywall, with no affiliate manipulation.

For sellers, Card Prices is also where the stock lives: scan cards in, keep an inventory, print a barcode label for each card, check out at card shows, and list and sell on the marketplaces you connect, so a card that sells on one is marked sold and taken down on the others.

Pokémon TCG is our focus, including Japanese and other-language sets, and search also covers Magic: The Gathering, Yu-Gi-Oh!, One Piece and other trading card games. Our goal is full coverage across all major TCGs, languages, and print variants.

Why It Exists

Independent Pricing Matters

The collectible card industry has consolidated rapidly. eBay acquired TCGplayer in 2022, and the same parent company (Collectors Holdings) now controls PSA, Beckett, and SGC — three of the largest grading companies. When grading, marketplace, and pricing data are all controlled by interconnected entities, independent tools become essential for collectors and vendors who want transparent, unbiased pricing.

Card Prices exists to provide that transparency. This tool doesn't grade cards, doesn't take a cut of transactions, and has no financial stake in what any card is worth. We just show you what things cost.

Multi-Marketplace

Compare prices across TCGplayer and eBay side by side — market price, lowest listed, recent sales, and shipping costs.

Every Variant

Filter by foiling (Holo, Reverse, Normal), print run (1st Edition, Unlimited), condition (NM through Damaged), and language.

Free Pricing Data

Our core pricing data and comparison tool are free and always will be — no paywalls, no data gating. Optional paid plans add scanning, binders and seller tools; access to market pricing data stays free. Donations are accepted through Buy Me a Coffee and go directly toward infrastructure and data access to keep the platform running for the community.

How It Works

AI-Powered Infrastructure

Card Prices uses machine learning across every stage of its pipeline — from identifying cards and resolving product variants to normalizing pricing data across marketplaces. What looks like a simple price lookup is backed by multiple layers of automated data processing and validation.

Product Matching

Cards exist under different names, codes, and formats across marketplaces. Our system resolves these inconsistencies automatically, mapping every listing to a canonical product identity regardless of how it's titled.

Data Normalization

Pricing data arrives in different formats from different sources. Our pipeline standardizes, validates, and cross-references this data to produce consistent, comparable pricing.

Data Integrity

Automated validation catches mismatches, outliers, and stale data before it reaches users. We prioritize accuracy over speed — if we can't verify the data, we don't show it.

Card Scanner (Beta)

The Card Prices app identifies cards from photos and returns instant pricing, and carries your collection, binders and, for sellers, your inventory, labels and show checkout. Now in testing on TestFlight (iOS) and Google Play (Android).

For Developers

API Access

We are currently not able to offer public API access to Card Prices data. We understand the interest and look forward to exploring this in the future as the platform matures. If you have a specific use case or partnership inquiry, please reach out — we're happy to discuss what may be possible.

About the Founder

Eric Schnelker — Founder, Card Prices LLC — holds three Bachelor of Science degrees from the University of Tulsa in Computer Science, Mathematics, and Cybersecurity, and is pursuing a Master of Science in Software Engineering at Purdue University. He also works professionally as an operations analyst and computer scientist.

A collector and vendor who works the secondary card market firsthand — buying, selling, and trading at trade shows — he builds the pricing infrastructure, data pipelines, and research tools that power Card Prices and its sister project, Card Research.

Eric also runs Game Enthusiasts LLC, a St. Louis-based trading card business.

Contact

General inquiries & support:
[email protected]

Business & partnerships:
[email protected]

Research:
[email protected]

LinkedIn: Card Prices LLC · Eric Schnelker

Card Prices LLC is an independent company. It is not affiliated with, endorsed by, or connected to any government agency or to any employer of its founder. Card Prices LLC is not affiliated with Purdue University. The founder's enrollment as a graduate student does not constitute an institutional relationship between Purdue University and Card Prices LLC. Research conducted in connection with Card Prices is independent and not sponsored, directed, or endorsed by Purdue University. The views, content, and opinions expressed on this site are solely those of Card Prices LLC and do not represent the views of any government entity, employer, educational institution, or other organization.