Here's a great way to build up your money. Just be sure you have 10,000 bits on you and go to the town of Rockland. You will meet a lady that plays the cup game. She will ask you how much you wish to bet - 100, 1,000 or 10,000.

Bet your 10,000 bits and choose the cup on the right. You should win the game and gain the money. Then quit and go back to the lady and play the cup game again. Bet another 10,000 bits and choose the cup on the right. Keep doing this until you receive all the money you want.