It exists in several finishes (Normal, 1st edition). Each one has its own price; the average above is for the regular version.
Artwork by Ken Sugimori. Some collectors chase every card by the same artist: how to start (in Spanish).
Attacks
WaterWater
Ink Spurt
20
Flip a coin. If heads, whenever the Defending Pokémon tries to attack, your opponent flips a coin. If tails, that attack does nothing. (This effect lasts until the Defending Pokémon evolves or is Benched.)