You are very, very resourceful. Just like the Utility Belt, this might stem from magic. Wealth abstracts the resources you have access to within this adventure - money or magic you can access.
Wealth does not represent in-combat gadgets or tricks - it is more of a tool to say, get to the other side of the world quickly.
To use your wealth, state how you plan to use it (and check if the GM finds it reasonable). Make a Test under 10+Grade. On a failure, using your wealth in this way would take too long, invoke too much red tape, or what you want is not available.
Dependent on the Grade, you have access to the following resources: