Onix - 9/12 is a Holofoil variant from the McDonald's Promos 2019 set, recognized for its Promo rarity. As part of this limited release, it features unique artwork that appeals to collectors. Currently valued at $7.33, the card represents a niche interest within the Pokémon trading card market, particularly among those focused on promotional items. Its market presence reflects the set's overall popularity and the ongoing demand for nostalgic Pokémon cards.