YOU WILL MOST LIKELY NEED STEALTH TO SOLO THIS!
This may be pretty obvious, but I thought I'd post it anyway.
When you hit 50 (maybe earlier), you can do the Belsavis Bonus Series, which will enable a bunch of Daily Quests.
One such Daily for the republic is called 'The Stasis Generator' The Stasis Generator - Missions - Star Wars: The Old Republic (SWTOR) Database
The quest involves killing 4 level 50 champion mobs and their boss.
Each mob drops 1800+ credits and an item. I get more blues than greens from them. They drop level 50 modded weapons as well. I have also gotten a bunch of purps from crafting missions to level 50 gear.
Two of the bosses have 150k HP and two have 95k. As a healer with a tank pet I can solo all 4 really easily (although they take anywhere from 3-5 minutes to kill) by healing my tank pet and keeping interrupts going.
The "exploit" is that by leaving the group phase and clicking the Reset button on the quest after killing 1-4 of the bosses, it will reset the whole zone and all bosses.
You can also kill the last boss with a group of 2-3 people pretty easy, although he does a lot of damage sub-50% and requires good interrupting. But he also drops high credits and usually 2 items.
Happy farming!