One of the easiest ways to get this is to use the Sword familiar/gem selling glitch. To do this:
- Try to have only one of any valuable gem in your inventory and equip the Sword familiar.
- Stand in front of the Master Librarian and use the Sword brothers spell.
- Quickly approach him to bring up selling menu.
- Go to the jewel selling menu and press . Equip the jewel you want to sell.
- Press again to close the menu and sell the jewel, then exit the shop. You now have 255 of that game to sell and makes a big profit.
Note: You must have all $100,00 in your inventory. It is not cumulative.