The booming market for collectible Pokémon cards, which celebrates its 30th anniversary on February 27th, presents an opportunity to assess the resale value of potential family heirlooms. A prime example of this trend is the sale of an ultra-rare Pikachu card for $16.49 million (approximately 14 million euros) at auction on Monday, February 16, 2026. This surge in prices suggests that forgotten collections stored in attics or basements could be worth significant sums. The article provides guidance on how to evaluate the potential value of these rediscovered treasures, encouraging individuals to examine their old toy chests and storage boxes.