Fast Money:
Follow the steps below to get some phat cash!

     Step 1 - Obtain 7500 credits and go to Nelson via Owmi. At Nelson, you can purchase gold
     ingots at 500 credits as opposed to 1000 credits at Koorong. 
     Step 2 - Buy the minimum 15 gold ingots and travel back to Koorong. 
     Step 3 - Take your gold to the Currency Exchange and sell enough so the gold's value drops
     to 520 credits. 
     Step 4 - Return to Nelson and purchase as much gold as possible. 
     Step 5 - Return to Koorong and increase the number of ingots you are selling to include all of
     them. Note: Do not press Circle! Instead, decrease the number of ingots you are selling to
     zero. You should now notice that the price of gold has now risen. 
     Step 6 - Sell off your gold ingots until the prices reaches 520 credits again, then purchase
     more gold Ingots from Nelson. 
     Step 7 - Repeat this process several times to accumulate money. 
          You cannot acquire more than 50,000 in credits at one time using this trick. Trying to
          do so will result in losing all of your gold ingots and credits.