Roperite Player Stamped value

The Roperite Player Stamped (Caster's Cup Promo Cards) is listed with a used value of $9999 [1]. This high value suggests it is a very rare or highly sought-after promotional item within the MetaZoo Card collection. To get a more detailed understanding of what drives this price, such as the difference between loose, graded, or complete sets, I would need to look up the specific item details.