[quote=@The Odeoron]
<Snipped quote by Zeal>

My civilization, the Terran dominion, would value one of these at 8,550 TD (Terran Dominion) Credits. But considering this is an entirely new world, i don't even know the true value of a credit here... 3000 seems like a lot! What would that do for me in traveller market? 
[/quote]

It is good, but not really. Gold isn't a hot commodity as you think, especially in the realm of omniversal connections. Unless it has some sort of properties, you'd be better of trading it for another resource.
*finishes my drink*
I guess I should explain that there really isn't a "traveller" anything. This is a place for those of tier four to find something to do, rest, and eat. A nice pitstop of sorts. The Tavern personal project of mine that I've been working on for a long time. Also, I wouldn't say there is much of a "traveller system" as more of there are just people moving about and adjusting to the tier four life.
*thinks as I scratch my head with my eyes closed*
Ram mentions that you can utilize the credits for other universes that has knowledge of tier fours or use it to buy stuff here. 
*points to the board*
You can find some of those places with the board, just grab a stub and leave the Tavern and it'll send you there. You can always return here from any door you find.