There are two ways to create infinite amounts of credits afaik (probably more)
First: L4 ressources are worth 10^4 C (10.000) and L5 ressources aren't worth 10^5 C but 10^6 C. If you now have 10 L4 ressources bought at a shop you can glue these to a ship core and safe the blue print. Now get a Plex Recycler and put in the 10 L4 resources and upgrade them to 1 L5 resource. If you sell it you can buy 10 of your L4 resource block ships (ignoring the cost of the core).
Second: Utilizing this bug: http://star-made.org/content/docked-ship-cloning you could just build a ship with some docking stations, dock some ships with expensive blocks (like faction blocks or L5 resources). Safe the blueprint of the mother ship. And buy some of the Motherships with their gold-nugget-ships docked for free.
Before these bugs are fixed balancing economy is impossible.
First: L4 ressources are worth 10^4 C (10.000) and L5 ressources aren't worth 10^5 C but 10^6 C. If you now have 10 L4 ressources bought at a shop you can glue these to a ship core and safe the blue print. Now get a Plex Recycler and put in the 10 L4 resources and upgrade them to 1 L5 resource. If you sell it you can buy 10 of your L4 resource block ships (ignoring the cost of the core).
Second: Utilizing this bug: http://star-made.org/content/docked-ship-cloning you could just build a ship with some docking stations, dock some ships with expensive blocks (like faction blocks or L5 resources). Safe the blueprint of the mother ship. And buy some of the Motherships with their gold-nugget-ships docked for free.
Before these bugs are fixed balancing economy is impossible.