You only need to get one of any print, art or card style to count for an individual card
Tier 1.5: StarCityGames Art Sleeves, Dex Protection Hyper Mat, KMC Card Barrier Mat Tier 2: BCW Double Matte, Ultra Pro Art, Ultra Pro Solid Color, Ultra Pro Double Matte, Channel Fireball , Max Protection Art, Ultimate Guard Supreme, Ultimate Guard Supreme Matte, Legion , KMC Card Barrier (non-matte), KMC Card Barrier Art Sleeves, StarCityGames Double Matte
The unrealistic cost is to force the player to use other methods to acquire those particular cards
Not only does this potentially shorten the number of turns needed to push a Pokmon in play, it also makes Stage 2 Pokmon decks much more consistent by adding a pair of cards that can be used to get those Pokmon into play