As with Dragon Age: Origins, place your most expensive item into your trash alone. Go to a merchant. Select sell and go to the trash tab. Hit Y and then nearly immediately press A. If you were successful the item you sold will have sold twice giving you extra money. To duplicate stackable items like potions purchase two or more stackable items. Do the above cheat. Enter into buy mode. Buy back all but one of the item you wish to duplicate. Repeat the cheat. Your stackable items will have increased for as many as you have sold. Example: Purchase ten potions. Place them in your junk pile. Perform the cheat. Enter the buy tab. Re-purchase nine of the ten potions from the buy-back tab. Enter the sell mode. Go to the trash tab. Perform the cheat. You will have 19 potions and their cost in coins doubled back to you.