Ishihara will organize trades with you throughout the game where you can receive the very rare Pikachu promo cards in exchange for rare colorless Pokemon.
As Ive highlighted in previous chase card lists (like when I covered the sleeper IR chase from Ascended Heroes ), theres often one IR that outperforms its rarity to make it to the higher rungs of value in a set
From an international perspective, as discussed above, there really arent that many foreign tourists in Japan whore dead-set on buying the newest, highest-demand Pokmon card packs anyway, what with the language barrier and the fact that organized Pokmon Card Game competitions generally only allow local-market cards to be used
So much so, in fact, you may want to pair it with similar cards such as Dryad of the Ilysian Grove
Any way you look at him, he's at least still better than his original printing
If you're into extremely bling collectible cards, check out our guide to expensive rare Pokmon cards.