Golden Sun: The Lost Age Cheats

Duplicating Items!
This is done during the Trial Road Challenge.

During the Trial Road Challenge, go to the first treasure drop chest that opens the door. Open the chest and it will ask you to put something in the chest and say 'yes' and you will go to the item screen. Drop an item as in forever not drop it in the treasure chest. Then go and step on the quit button, and say 'yes'. You will get all the items you dropped back. Then go to a store to and go to the artifacts; the items you dropped will be there for sale.

The item you are trying to duplicate must be equipped on one of your characters.