Once you've gotten a bit of gold, store the person with the gold in the inn. Leave the inn. Re-enter, then add and remove the person with the gold over and over again, each time pooling gold to someone else. After 4 or 5 times, take the gold holder and the "banker" out of the inn again. Then do it all over again. With some patience, you can build up as much gold as you deem necessary. About $4MM should do for even the most expensive tastes.