Trading in a virtual economy II

Lately I have moved on to trding specialized skill books. The profit margina are good and they move relatively fast. With my current wallet i can afford to have several hundreds of millions held up in prders without much fuss. The evolution went from the low spread ammo market to the higher spread but implant market to the battleship module market planetary commodities and finally skill books. In between I have dabbled in courier contracts and tech 2 ship sales. I have learned a couple of things. How to exploit a market bit who matches orders to the risk of taking courier contracts which demand large collateral.