-1 perma weapons are supposed to be hard. Grind events, grind quests, etc.
With the current quests that are available, you can earn 145k credits per hour with a party system. This is:
50k from planet patrol
75k from clearing caves
10k from CY patrol
10k from Resupplying Village (Supposed to be 100k, awaiting a fix)
If you play 3 hours a day, that's 435k per day, 3.05 mil a week. Obviously these numbers are different for everyone as everyone's ability to play on the server is different, but that's the baseline that I'm giving. This is not factoring in daily spins, credits from events, potential gambling rolls, salary, credits being given to you, or selling renown.
Point is there is a lot of ways to make money if you want to try, and perma weapons should be difficult to acquire. Rewards long term players a bit more.
More quests are on the way btw.