Is this financial advice?
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No. TCG Quant is an informational tool that tracks quantitative supply and demand signals based on publicly available eBay data. Nothing on this platform constitutes financial, investment, or trading advice. Past signal performance does not guarantee future results. Always conduct your own research before making any purchase decisions.
How often is the data updated?
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Pokémon and One Piece Booster Boxes update weekly. SV and SWSH Elite Trainer Boxes update bi-weekly. Legacy sets (SM Era, XY Era), Ultra Premium Collections, and One Piece products update monthly. Monthly products use a price momentum model rather than full supply/demand signals due to lower trading volume.
What does an 88.7% hit rate actually mean?
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Out of 355 historical BUY SETUP signals that have resolved (sufficient time has passed to measure forward prices), 88.7% correctly identified a set that was in active supply contraction — meaning prices held or appreciated over the following 4 weeks. The average gain across all resolved signals is +19.3% at 4 weeks and +22.4% at 8 weeks.
What markets does TCG Quant cover?
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We currently track 138 sealed TCG products: Pokémon (SV + SWSH Booster Boxes, all ETB variants, SM Era, XY Era, Ultra Premium Collections, Special Collections) and One Piece (Booster Boxes OP-01 through OP-14 plus Extra Boosters and Premium Boosters, and sealed cases). All pricing data is sourced from eBay sold listings and TCGPlayer.
What's the difference between BUY SETUP, WATCH, and NEUTRAL?
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BUY SETUP means all 3 supply contraction conditions are met simultaneously: DSR trending up, supply down 10%+ over 4 weeks, and inventory below 25 days. WATCH means 2 of 3 conditions are met — the setup is developing but not fully formed. NEUTRAL means fewer than 2 conditions are met with no clear signal at this time.
Why do you use eBay data? What about TCGPlayer?
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eBay is the primary data source for all products because it represents the largest and most liquid secondary market for sealed TCG products, with the highest volume of completed sales. This gives us the most accurate real-time price discovery and reliable supply counts. The one exception is One Piece sealed cases — because case-level sales are extremely thin on eBay, we pull pricing data from TCGPlayer for that product type, which has better coverage of the case market. All other signals (Pokémon Booster Boxes, ETBs, Legacy Sets, UPCs, and One Piece Booster Boxes) use eBay sold listings exclusively.
Why do you use eBay for pricing data? And what about One Piece Cases?
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eBay is the most liquid secondary market for sealed TCG products — it has the highest volume of real, completed transactions, making it the most reliable source for true market pricing. We use eBay sold listings (not asking prices) for all Pokémon products and One Piece Booster Boxes. For One Piece sealed cases, we pull pricing from TCGPlayer instead, because cases transact at much lower volume and TCGPlayer captures that thin market more accurately than eBay does.
Can I cancel my premium subscription?
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Yes, you can cancel at any time. This is an early access beta — payment processing and self-serve account management are being set up. Reach out directly via the Discord community to manage your subscription during the beta period.