The most valuable card illustrated by Lee HyunJung is Heat Rotom (Rising Rivals) at $95, ahead of Tandemaus ($28) and Koffing ($28).
Value counts each card once at its highest-priced printing. The homepage leaderboard additionally requires a priced rarity cohort, so its totals run slightly leaner.
By TCGplayer market price, the most valuable Lee HyunJung card is Heat Rotom (Rising Rivals) at $95, followed by Tandemaus (Paldean Fates) $28, Koffing (Great Encounters) $28, Iron Bundle (SVP Black Star Promos) $27, Shinx (Mysterious Treasures) $23. Prices are TCGplayer market for raw copies (any condition) and refresh daily.
TickerMint tracks 31 Pokemon cards illustrated by Lee HyunJung across 34 printings, with a combined market value of $283 counting each card once at its priciest printing.