What Makes a Card Valuable Rarity: Secret rares, special illustration rares, and alternate arts are printed in smaller quantities Popularity: Charizard, Pikachu, and Eeveelution cards command premiums purely because people love them Age: Older cards, especially from the WOTC era, tend to be more valuable due to limited surviving supply Condition: The same card in PSA 10 can be worth 5-20x what it's worth in PSA 7 Cultural moment: Cards associated with viral moments, anniversaries, or media events often spike in value Competitive playability: Cards that are strong in the TCG competitive scene have additional demand How to Check Prices Misprint: Best for graded card prices with historical data and pop reports TCGplayer Market Price: Best for raw card market values eBay Sold Listings: Filter by "Sold Items" for real transaction prices across all card types PriceCharting: Good for quick lookups and trend data Never rely on a single source

This has been realized expertly on cards such as Vault 11: Voters Dilemma
All told, there will be a total of 229 card with 15 mythics, 53 rares, 60 Uncommons, and 101 Commons
Having launched on PC a few years ago as a browser based game, before becoming a separate download last year, the Pokmon TCG has taken another leap, and is now available on the Apple App Store too
Goalkeeper Effect