There was a trick where you could only successfully help move a block if you pulled a block with a symbol that matched the symbol on the base of the Faerie statue you found. 20% is as good a guesstimate as any.
I guessed 3200 because I have absolutely no idea
AnonymousAzn wrote:how did you guys become so rich anyways?
I spent almost all my money about a month and a half ago, but now I have more than that, because I figured out how to win big on the World Challenges

It's really a matter of finding something you're good at doing, then doing that constantly
Restocking Dubloons is a good, consistent moneymaker, too, though I found it awfully boring after too long... why Dubloons? Well, it's obvious once you realize something about the denominations...