do people buy pokemon cards Inside the frenzy of a new Pokémon card release How to Buy Pokémon Cards

And less supply of something super popular means its more expensive

Pokmon proxy cards are not legal for official tournaments or events sanctioned by The Pokmon Company International

Progression is driven by opening more packs, unlocking rarer Pokemon, and showcasing or trading them with other players through the games social features

Like most One Piece TCG cards, the value of Killer depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Ultra Deck: The Three Captains)

There have been previous effects printed previously in this genre of card

This is highly reprintable, though, just as a warning