How to buy Pokemon Let's Go Pikachu and Eevee ?

Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! are RPG games set in the Kanto region and include the original 151 Pokémon. Battling non-player character Pokémon Trainers and Gym Leaders with caught Pokémon creatures. However, when facing wild Pokémon, instead of battling them with the traditional battle system like in past games, the catching of Pokémon uses a system that is reminiscent of the mobile spin-off game Pokémon Go. Connect with other players and battle them! There are two communication features to use for battles: local communication and internet communication, which lets you connect to players who may be far away. You can also trade Pokémon using these communication features. Trade Pokémon with friends to gather Pokémon you've never seen before and complete your Pokédex.