Gyarados

Gyarados (34/108), the Rare from Evolutions, has an estimated ungraded market price of about $9–$12. Note: 24 other cards named Gyarados exist across the sets Riffle tracks, at very different values; check the collector number.

This page covers Gyarados (34/108), the Rare (about $9–$12) from Evolutions.

The other versions: #11/144 from Skyridge (Rare, about $370–$490); #8/107 from Deoxys (Rare, about $260–$340); #123/123 from HeartGold SoulSilver (Rare, about $200–$270); #12/110 from Legendary Collection (Rare, about $190–$250); #32/97 from Dragon (Uncommon, about $85–$115); #21/98 from Ancient Origins (Rare, about $55–$75); #7/95 from Call of Legends (Rare Holo, about $50–$70); #4/123 from HeartGold SoulSilver (Rare Holo, about $50–$70); #H10/144 from Skyridge (Rare, about $50–$70); #6/102 from Base Set (Rare, about $43–$60); #7/130 from Base Set 2 (Rare, about $37–$48); #31/113 from Legendary Treasures (Rare, about $33–$43); #19/100 from Stormfront (Rare, about $28–$37); #26/123 from Mysterious Treasures (Rare, about $26–$34); #24/124 from Dragons Exalted (Rare, about $18–$25); #30/181 from Team Up (Rare, about $10–$13); #23/83 from Generations (Rare, about $7–$9); #20/70 from Dragon Majesty (Rare, about $5–$7); #20/98 from Ancient Origins (Rare, about $3–$5); #40/192 from Rebel Clash (Holo Rare, about $3–$4); #33/147 from Burning Shadows (Rare, about $3–$4); #130/165 from 151 (Rare, about $1–$2); #022/78 from Pokémon GO (Holo Rare, about under $1); #043/193 from Paldea Evolved (Rare, about under $1).

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