card sleeves 9 pocket Binder Nine pockets per page hold up to 18 cards Yeeclot Trading Card Sleeves Pages,

The answer: adaptation

PWCC suggests that this leap in price could be down to whats been dubbed the Waifu Tax, a recent trend of problematic origin (as explained by Kotaku) that has seen Pokmon cards featuring female characters drastically increase in value

Giratina EX Pokmon | Black & White: Dragons Exalted Variants Holo Prices Others Artist Eske Yoshinob Rarity Rare Holo EX National Number 487 Other Printings Would you like to learn more about this card

These cards usually only work once, because your opponent will play around them after seeing them for the first time

With those cards making an appearance in upcoming Japanese and English sets, expect Gold Star cards from that set, such as this Treecko, to skyrocket in popularity and price in the near future