When you play Gyarados from your hand to evolve your Active Pokémon, you may flip 2 coins. For each heads, discard an Energy card attached to the Defending Pokémon.
Attacks
50Dragon's Vengeance
If Gyarados has 7 or more damage counters on it, this attack's base damage is 100.
How much is Gyarados #11/144 worth?
Gyarados #11/144 is a Rare card from Skyridge (2003) — today it trades at roughly $70.40 ungraded. Across the 2 printings we track, copies run anywhere from $249.95 to $2,200.00 depending on the version you're holding.
Grading changes the math on this one: a PSA 10 is valued around $2,299.00, roughly 32.7x the raw price, while a PSA 9 sits near $496.57. 418 copies have been graded to date, and 31% of them came back a 10 — worth knowing before you pay grading fees.
Prices on this page refresh nightly from live TCGplayer market data and are cross-checked against actual sold prices, so a single inflated listing never becomes "the price". The chart above has the full history.