The economy is pretty vast, especially if you are making high-end ships, so that's why I do not suggest setting up structures until you have more of a grasp of the economy. Starting out with ships is just a bad idea as you won't know what will sell and what won't, and you need a lot of structures for ships unless you are buying a lot of things from the auction house or other players. Once you have a reasonable picture of buy orders, you can then start with smaller items to fill those needs and work upwards. Feel free to ask questions or for help as I've been running eco on Roberts for well over a decade and have a pretty large setup, plus I am governor of 2 of those eco ports, and am always happy to help 🙂