Like most Magic: The Gathering cards, the value of Kaito Shizuki depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Kamigawa: Neon Dynasty)
SR Super Rare Laval Forest Sprite X FIRE Level 2 [ PyroTunerEffect ] ATK 300 DEF 200 When this card is sent from the field to the Graveyard: All face-up "Laval" monsters you currently control gain 200 ATK for each "Laval" monster in your Graveyard, until the End Phase
Pokmon VS: This set was only printed in 1st edition, and no unlimited edition is available (except for the Pryces Lapras a.f.a.i.k., which was also released as a promo in unlimited edition) Pokmon Web: This set is printed in both 1st and unlimited edition in about equal quantities
If you are wondering why left/right but not top/bottom has a chance to be forgiven for flaws, its because PSA slabs will "hug" the left/right of a pokemon card size perfectly but there will be some room top/bottom for the card and corners are wide open to view