pokemon card box set TCG: Mega Evolution - Base Enhanced Booster Trading cards are in Japanese only. 320: 1999 Pokémon Base Set

There are three main reasons: A PSA 10 is extremely rare

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There are other factors that can make a card valuable aside from what symbol is printed on it

That's right: if you preorder a Core Set 2019 booster box ahead of time, you can actually buy your box and bring it home (or crack it all open there!) right away