pokemon card 151 booster box japanese Pokémon TCG: Giovannis Charisma and a bonus new Tool card Pokemon 151 Japanese Booster Box

The most famous example of a sale took place with a card that was graded at 10

Other than collectors who sleeve every game they own to keep them pristine, you might want to sleeve a game where the cards aren't the best quality but you love the game and it gets played a lot, or perhaps you have picked up a game second hand and some of the cards are damaged so you want to use solid sleeves to stop people seeing damage on a certain card

Even a simple +1 from Chandra, Torch of Defiance can mean more cards and more damage

Incapsula incident ID: 1016000030848342465-542841921630372077

Any such creature that is a good Regrowth or flicker target also has good value as a spirit commander