In the core series games
Generation I
In Generation I, TMs can only be used once.
Generation II
In Generation II, TMs can only be used once.
Generation III
In Generation III, TMs can only be used once.
Generation IV
In Generation IV, TMs can only be used once.
Generation V
In Generation V, TMs can be used any number of times.
Generation VI
In Generation VI, TMs can be used any number of times.
Generation VII
In Generation VII, TMs can be used any number of times.
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Location
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Purchase price
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Sell price
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PE
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Silph Co.
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N/A
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N/A
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Generation VIII
In Pokémon Sword and Shield, TMs can be used any number of times.
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Purchase price
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Sell price
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SwSh
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Route 3
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N/A
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N/A
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In Pokémon Brilliant Diamond and Shining Pearl, TMs can only be used once.
Generation IX
In Generation IX, TMs can only be used once.
In the spin-off games
Pokémon Mystery Dungeon series
TMs in the Mystery Dungeon series are named only by the move they teach. For example, Attract is the item that teaches the move Attract. Most TMs, however, correspond to a TM in the core series' contemporaneous games.
In Red Rescue Team and Blue Rescue Team, Explorers of Time, Darkness and Sky, as well as Pokémon Mystery Dungeon (WiiWare), Sandstorm is replaced with a Wonder Orb.
TMs in Red Rescue Team and Blue Rescue Team and in Explorers of Time, Darkness, and Sky can only be used once before becoming Used TMs. In Gates to Infinity, TMs can be used any number of times. In Pokémon Super Mystery Dungeon, some TMs can only be used once while rainbow-colored TMs can be used any number of times.
In Rescue Team DX, TMs can only be used once. Whilst the available TMs are the same as those in Pokémon Sun and Moon, the TM list order is the same as for Super Mystery Dungeon (that is, in the TM order for Pokémon Omega Ruby and Alpha Sapphire), with newly added TMs added to the end of the list.