Paper Mario: The Thousand-Year Door Cheats

Infinite Shop Points
First you will have to have given Zest T. her new contact lense. Then buy a lot of mushrooms at the shop in RoguePort for 5 coins each. Then cook them all into Shroom Frys at Zest T.'s. You can sell the Shroom Frys back for 5 coins, the same price you paid for the mushrooms. Using this you can gain free shop points.