The Pokémon Company International announced that the first 52 episodes from Indigo League are now available for purchase on iTunes, Google Play, and Amazon. Individual episodes cost $2.99 USD / £2.49 or $21.99 USD / £19.99 for the whole season.

Press Release - Original Pokémon Episodes Now Available in HD

Pokémon: Indigo League, the first season of the classic Pokémon animation, is now available for digital purchase in HD. This marks the first time fans can catch season one in its entirety, as well as individual episodes, on iTunes, Google Play, and Amazon.

The long-running Pokémon the Series follows Ash, a boy who sets out on a journey to become a Pokémon Trainer on his 10th birthday. Ash is thrown for a loop when his first Pokémon turns out to be the now-iconic Pikachu, but they work together with the help of their friends Brock and Misty to become “the very best, like no one ever was.” The first season of Pokémon animation originally aired in Japan in 1997 and in the United States in 1998.

Individual episodes can be purchased for the approximate price of £2.49, and the full season is available for the approximate price of £19.99.

Source: http://www.pokemon.com/us/pokemon-news/original-pokemon-episodes-now-available-in-hd/