See the small can at the Apple Market? Try to kick it into the counter of the big bakery (the one with the pink roof). If you did it right, you'll get 1000 zennies. After that, get out of the room and go back in. Repeat the process until you have enough money to buy what you want.
Unlimited Zenny (method 2):
Play the beast hunter game at the studio and get 4000 gold for completing grade A . Repeat this as needed to earn as much money as possible.
Complete the game to unlock an additional option (in green) on the main menu that allows the game to be played at a more difficult level. Defeat the game under the new difficulty level to unlock another option (in yellow) that allows the game to be played at an easier difficulty level, with dash boots and full left arm weapon capability.
Game Shark Codes
Have All Special Weapons 800BE410 FFFF Infinite Health 800b521e 00c4 Infinite Zenny 800c1b2c 423f 800c1b2e 000f
Thanks to Revolution readers Ian, Greg Michalowski, kit & jello, Fefnir, and HunterX179!