The developers focused on the themes of "beauty", "bond", and "evolution", and it is based on these themes that they created the games' core mechanic where Pokmon could achieve a higher form of evolution by strengthening their bonds with trainers
Japanese alternate-art cards and premium treatments can be particularly desirable
The Burger King and Pikachu cards from the same promotion follow in popularity
They knew exactly where to walk, exactly what stuff they took. The valuable cards have unique serial numbers, so they can be flagged online as stolen, making it difficult for a thief to resell them
if you have a card with a star to mark it as a Rare, then itll also be holographic
The material is archival-safe, acid-free, and PVC-free, protecting the cards from damage and preserving their condition over time