The most valuable card illustrated by mingo is Froslass (SVP Black Star Promos) at $49, ahead of Maractus ($27) and Sigilyph ($11).
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 mingo card is Froslass (SVP Black Star Promos) at $49, followed by Maractus (Black Bolt) $27, Sigilyph (White Flare) $11, Froslass (SVP Black Star Promos) $7, Iono's Wattrel (Ascended Heroes) $7. Prices are TCGplayer market for raw copies (any condition) and refresh daily.
TickerMint tracks 14 Pokemon cards illustrated by mingo across 19 printings, with a combined market value of $96 counting each card once at its priciest printing.