Sources & Methodology
Every data type on TCG Comp traces to a source category below. Official publisher data and observed community estimates are always distinguished; demo/placeholder data is labelled on the page where it appears.
TCGplayer marketplace listings
Marketplace · supports: price data, marketplace links, card info · reviewed July 20, 2026
Linked for current listings. Prices shown on TCG Comp are snapshots, not live TCGplayer data.
Pokémon TCG official product pages
Official publisher · supports: set list, pack contents · reviewed July 15, 2026
Product facts only. No official artwork is reproduced.
One Piece Card Game official site
Official publisher · supports: set list, pack contents · reviewed July 15, 2026
Wizards of the Coast product pages
Official publisher · supports: set list, pack contents · reviewed July 15, 2026
Community pull-rate observations (demo placeholder)
Community dataset · supports: pull rates · reviewed July 10, 2026
DEMO DATA: replace with a cited community dataset (with permission) before launch. Estimates only — never official odds.
TCG Comp editorial analysis
Editorial · supports: card info, pack contents, set list · reviewed July 20, 2026
Editorial assessments (chase scores, best-for labels) are opinions, not facts or advice.
Methodology in one line: identify the exact product or printing, cite where each number came from, date every snapshot, and mark estimates as estimates.