Thanks for your interest in being an aircraft broker.
Brokering private worlds is typically requested by the world owner. We charge a nominal fee for the broker (10 tokens per broker plus a 10 token change fee), and that cost can only be paid by the world owner.
When a broker is appointed to a world what I generally do is apply a start-up package, which is worth €30m or so in value. It is a random mix of generally low value planes that is assigned. I also apply a starting cash balance of €250m and offer a few top-up packages after that. The total value of broker incentives is €1bn over a couple of real weeks.
The broker is expected to generate all of their income from the brokerage business and as such cannot operate an airline. Otherwise there is a risk the broker will use the resources given to them to beat everyone else in the world. For a similar reason the broker does not appear in airline rankings as that would distort the picture a little.
The broker will get discounts on aircraft that come through the aircraft request system, at 10% off the list price, which they can pass onto airlines by offering negative mark-ups. Aside from that the broker must generate enough cash through leases and sales to fund their growth, it can be quite challenging at times.
If you are interested in trying to broker a world we can put you in the next public world that opens up. It's actually a fun role and can provide a different type of fun to running a standard airline.