Point is you have others doing you hauling for you, and you just sell it when it arrives
Now you are saving tons of time to do other things, make the "commissions" back that you pay for this service, or whatever. Point is you have others doing you hauling Knight online Gold for you, and you just sell it when it arrives.
Other goods Minerals, the life blood of all production corps. Volumes could be written on trading minerals. Some regions don't have access to nocxium, others have problems finding isogen.
Learn what is in demand and the current prices. And stay current. Mineral prices rise and fall like a nun in a cucumber patch, so just because you sold one day at 100 doesn't mean you can do it a week from now, or tomorrow. Mineral trading takes a lot of effort and time (research) but the rewards are huge.
Module trading: This I liken to specialty trading, a niche market, taking even more research and time to effectively manage. Some modules can cost millions and millions for just one item. For those brave enough,
With enough cash, this is probably the highest tier of trading in EVE. It’s not for the faint of heart. As of this writing I have yet to dabble in this and I have a sizable bankroll. While the rewards are great, the risk is even greater.