About CardVolume

CardVolume is an independent index of collectible trading cards: Pokémon, Magic: The Gathering, Yu-Gi-Oh!, sports cards, One Piece, Disney Lorcana and vintage non-sport cards. Each card gets one page with its exact identity, documented sales, graded population, the math behind grading decisions, and plain-language research.

Why it exists

Card prices online are usually a single number with no explanation: an asking price, an average that mixes versions and grades, or one headline sale. We built CardVolume around a stricter rule. A price is a documented transaction of an exact version and grade, with a date and a link. When that evidence does not exist, we say “insufficient” rather than guess.

What we will not do

• Predict prices or call any card an investment.
• Show asking prices as values or average across different versions.
• Publish figures we cannot trace to a source.
• Sell cards, take commissions on sales, or accept payment for coverage.

How it is built

Research is gathered with AI assistance and checked against sources before an editor approves it. The rules come from our Learn guides, and every definition is in the methodology.

CardVolume is independent and not affiliated with any card publisher, grading company or marketplace. Contact: [email protected].