how to know which pokemon cards are rare Identify Pokémon Rare Pokémon Card Values |

Are we talking about less than 1,000 cards

Actually, there are (at least) two PSA price guides

Their boss monsters, Prediction Princess Tarotrei and Prediction Princess Tarotreith , has an effect that allows the player to reliably flip monsters face-down or face-up, allowing you to use their effects again

As interest in retro games, cartoons, and classic pop culture continues to rise, collectors actively seek out these figures, vehicles, and playsets from their childhoodmaking complete, rare, or well-preserved items especially desirable in the collector market

And like you pointed out, most of them are really cheap and easy enough to get