Rare cards are marked with a star () and usually consist of evolved and Legendary Pokémon. Most English Booster packs contain at least one guaranteed Rare card. Rare cards can also come in a Reverse Holofoil print. If a Booster pack contains a Reverse Holofoil Rare card, this is in addition to the guaranteed Rare card.

In this guide, we go deeper and track all the rarest, most expensive Pokémon cards that have sold throughout the years. Naturally, the biggest common factors among these rare Pokémon cards are age and scarcity. Most originate from the earliest Pokemon TCG sets, or are one-off tournament prize cards printed in very low numbers.