The Max Repel, first introduced as an item in the Generation One games, is a one-time-use item that allows the user to walk 250 steps without encountering any wild Pokémon lower than the level of the user's first Pokémon in their party.
How To Obtain
You can obtain Max Repels by finding them occasionally on the ground while walking in some games, but they can be bought at later Pokémarts in all of the games as you advance through the storyline and earn gym badges. The price to buy a Max Repel is $700, while the money you gain from selling them is $350.
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