As of right now, the economy is pretty stagnant. I've had a great deal of ore simply not sell for days at a time. I'd suggest prospecting, crafting greens/blues with a JC and disenchenting them. A week or two ago I did that to ~100 stacks of elementium and ~20 pyrium and came out with a net profit of something like 4000g. Pretty sad. Once mop goes live, things should pick up again.
If you must make money immediately, I'd suggest taking advantage of there no longer being a cap on the ammount of daily quests you can do.