My newest market i am entering is Planetary Interaction.
In its simplest, Planetary Interaction is is the extraction of resources from a planet and then the repeated combination of these resources, with processors on the planet, to make further products for eventual sale on the market.
The final products are mostly the POS / Sov Structures and POS Fuel.
The beauty with Planetary Interaction (known as PI) is that each of the items extracted (Resources) and all the products processed (P1, P2, P3, P4 where, you guessed it, P1 products combine to make P2 products etc) are available to be bought or sold on the market.
Therefore, it is possible to buy P3 products on the market, haul them to a planet and then process them into P4 products to be hauled back to a station and sold on the market.
Or it is possible to buy P2 products on the market, haul them to a planet and then process them into P3 products to be hauled back to a station and sold on the market.
In other words, you can make ISK from PI without actually extracting Resources from any Planet. Think of PI as Mining and Manufacturing but on a Planet.
Many claim that PI is "passive income" - mainly because you can set up facilities on a planet to automatically extract resources + combine them to make P1 products + combine them to make P2 products all on the same planet and all this occurs when you are offline, much like manufacturing. This can be set up to happen over a week and all the player needs to do is adjust the extractors once a week (need not even undock to do that) and turn up to the planet once a month to take the finished products to the market for sale. Sort of like mining AFK.
Therefore, the way i look at Planetary Interation is in two parts.
Firstly, there is the extraction of Resources to be combined to make the P1 products. This is best done outside of Highsec given Highsec planets don't tend to have a high concentration of some of the desired Resources. This is like mining, afk.
Secondly, there is the combination of Products to make higher level products. This can be done in Highsec and indeed this is there i am focusing with my "Factory Planets". This is like Manufacturing.
My entire aim with Planetary Interaction is to combine P2 products i bought on the market into P3 products to be sold or to combine P3 products i bought on the market into P4 products to be sold.
In my first month at trying this (having skilled up) i made 681m ISK and in January to date i have made 555m ISK with just one alt operating 5 planets. I greatly suspect this will achieve my golden rules of being low time usage + earn at least a Plex a month + high margin.
I will be going more into what i am doing in later posts but i note that the likes of Foo who blogs at foo-eve.blogspot makes part of his living with Planetary Interaction in Wormhole space.