The Lillie card from the Terastal Festival Mega Dream EX series represents a significant character within the *Pokémon* franchise, known for its strong connection to the *Sun and Moon* game series and animated adaptation that aired in 2016.

Unopened cards, particularly of popular characters like Lillie, tend to attract considerable collector interest due to their rarity and condition, emphasizing the importance of the card's preservation.

While this set shows signs of wear from use, the included Lillie card remains protected and unopened, which enhances its appeal in the Japanese market, notorious for maintaining authenticity and high storage standards.

Given the current bid of ¥6,000, collectors may find value if they consider regional pricing, as this type of card often appreciates in rarity given its production limits and fluctuating demand.