One of my many gold farming places.. Planet : Zargon , NPC : Selina / Starstorm Quest : Rescue The Heroes!
Explaination : There are eight drones at the beginning of the quest you need to run through. They all have 68 HP each and they give 441 Credits. After you are done with them, there is an easy boss that gives 3081 Credits. In total, you will recieve 6609 Credits (441 * 8 = 3528 + 3081 = 6609)
Important Notes You Should Read To Save Yourself Some Time.
-You can easily 1 shot the drones at Level 40
-Remember to use an attack that doesn't drain a lot of energy and has a short, short animation time so you can cut through to the boss in a quick amount of time. Ex. : Monthly Rare Viking Mech's Frostval Axe. This is the one I use, it has a very short animation time. By animation time, I mean how fast an attack takes to start and finish, Ex. The Frostvale Axe has a faster animation time than the Frozen Cannon (These are both Viking Mech Weapons.)
-Don't pick a mech with low Energy because when you walk through the drones, there are lightning bolts hitting you, taking away small amounts of energy.
@Grapyorange I think it's impossible to have 564 Million Credits in the place that you suggest because it will take long time to get that money, you are the only one i've seen that have a lot of money you beat vampire fexy!