Guides
Plain-English guides to what trading cards are worth and how to collect smart — how we price cards, whether a sealed box is worth opening, why the rarity symbol isn't a price tag, and how to stretch a budget. Written to be genuinely useful, not to sell you anything.
How DeckSpec Prices Cards
Market price vs. the DeckSpec price, where our data comes from, and what 'indicative, not offers' really means.
Is a Booster Box Worth Opening?
Crack it or buy the singles? How expected value works, and how to read our worth-opening estimates.
MTG Card Rarity & Value Explained
Why the rarity symbol isn't a value ladder, and what actually moves a card's price.
Pokémon Card Rarity & Value Explained
The modern Pokémon hit ladder — ex, IR, SIR, Hyper Rare — and what actually makes a card valuable.
How to Tell if a Card Is Valuable
A reliable five-step checklist to price any card you find — without guessing.
Building a Budget Collection
How to spend a small budget well — singles over packs, reprint timing, and tracking value.