They can be, if you're willing to investtime & money now. They can be expensive, but once you're high level in it, you can almost always make the money back. Up to you really. I find them a nice change from grinding/questing.
____________________________
People don't like to be meddled with. We tell them what to do, what to think, don't run, don't walk. We're in their homes and in their heads and we haven't the right. We're meddlesome. ~River Tam
Sedao