I ran a search and did not see this so here it is....
For all of you that come over to Test Center only while there is a major publish to test out, you have probably been in the position where you are in dire need of credits as SWG gives you zip when you get there.
The only time this is not the case, if memory serves, was during the JTL beta testing as the frogs were giving out credits at that time. This is not the way SOE normally operates the Blue Frogs (character builder terminals), however. Normally the "credit" option is disabled....but do not dispair!
To "print" your own credits, when the Jedi Options are enabled on the Frogs, simply fill up your inventory with Jedi Knight Robes (sell to a junk dealer for 7700 credits each) and visit the junk dealer to sell them. Rinse and repeat until you have all the credits you want and/or need
I have personally used this on several of my accounts there on Test Center over the past 3+ years and found that, with a 0% inventory (items equipped or in an equipped backpack do not count towards this total) you should make almost 600k every trip from the frog to the junk dealer. You can literally make several million in only a few trips...enjoy
**Disclaimer:
Blue Frogs must be available with Jedi options activated