Kingdra

Kingdra (33/163), the Holo Rare from Battle Styles, has an estimated ungraded market price of about $0.40. Note: 16 other cards named Kingdra exist across the sets Riffle tracks, at very different values; check the collector number.

This page covers Kingdra (33/163), the Holo Rare (about under $1) from Battle Styles.

The other versions: #148/147 from Aquapolis (Rare, about $520–$680); #H14/147 from Aquapolis (Holo Rare, about $185–$250); #85/95 from Unleashed (Rare PRIME, about $50–$70); #8/111 from Neo Genesis (Rare, about $20–$26); #19/147 from Aquapolis (Rare, about $15–$20); #7/146 from Legends Awakened (Rare Holo, about $14–$19); #TG03/30 from Astral Radiance Trainer Gallery (Rare, about $10–$13); #108/160 from Primal Clash (Rare, about $10–$13); #19/64 from Neo Revelation (Rare, about $8–$10); #12/109 from Team Rocket Returns (Rare, about $4–$6); #17/95 from Unleashed (Rare, about $4–$6); #84/116 from Plasma Freeze (Rare, about $3–$4); #31/147 from Burning Shadows (Rare, about under $1); #107/160 from Primal Clash (Rare, about under $1); #037/196 from Lost Origin (Holo Rare, about under $1); #032/182 from Paradox Rift (Rare, about under $1).

The collector number printed at the bottom of the card is the reliable way to tell them apart.