The most valuable card illustrated by Yano Keiji is Mewtwo ex (30th Celebration) at $65, ahead of Bloodmoon Ursaluna ex ($60) and Sawsbuck ($39).
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 Yano Keiji card is Mewtwo ex (30th Celebration) at $65, followed by Bloodmoon Ursaluna ex (Prismatic Evolutions) $60, Sawsbuck (White Flare) $39, Teal Mask Ogerpon ex (Twilight Masquerade) $20, Wellspring Mask Ogerpon ex (Twilight Masquerade) $15. Prices are TCGplayer market for raw copies (any condition) and refresh daily.
TickerMint tracks 11 Pokemon cards illustrated by Yano Keiji across 11 printings, with a combined market value of $244 counting each card once at its priciest printing.