The official Japanese Pokémon website has announced that those that pre-order Pocket Monsters Let's Go, Pikachu! or Eievui! at a Pokémon Center, Pokémon Store or the Pokémon Center Online will receive an exclusive original figure set. In addition, those that pre-order both games can receive an an original art book.

Prices:

■ "Pocket Monsters Let's Go! Pikachu" 5,980 yen (excluding tax)
■ "Pocket monsters Let's Go! Eievui" 5,980 yen (excluding tax)
■ "Monster Ball Plus" 4,980 yen (excluding tax)
■ "Pocket Monsters Let's Go! Pikachu Monster Ball Plus Set" 9,980 yen (excluding tax)
■ "Pocket Monsters Let's Go! Eievui Monster Ball Plus Set" 9,980 yen (excluding tax)

1. Pre-order Gifts for Game Purchases - Pokémon Center Original Figure Sets

Those that purchase Pocket Monsters: Let's Go, Pikachu! will receive the Pokémon Center Original Figure Partner and Pikachu Set and those that purchase Pocket Monsters: Let's Go, Eievui! will receive the Pokémon Center Original Figure Partner and Eievui Set.

2. Pokémon: Let's Go, Pikachu!･Pokémon: Let's Go, Eievui! ART Book

The art book features drawings by GAME FREAK artists for the games which were used during the development process.

3. Pokémon Center Original Pouch

Those that purchase the Monster Ball Plus will receive a Pokémon Center Original Pouch.

4. Pre-order Gift Legend

Source: http://www.pokemon.co.jp/info/2018/07/180706_p01.html