Again, it is hard to judge this aspect in beta, since the detail work is often the last thing to get added to a game prior to release. The gameplay is still being tweaked. The good part is that soloing seems to be not only possible but viable through most of the life of your character. I personally found that things were just a little too easy to kill. You get too much experience for killing the easy Mobs and not enough for killing the tough ones.
Money is also very difficult to accumulate.
However, I would assume that this is going to be one of the focuses as they go into the final testing phase, and there will be more balance at release. There is a nice combination of range and close up attacks and a ton of nano spells for every profession, more than you will possibly be able to use for your character. There are good points and bad points to their system. The good part is that you are not totally locked into a set pattern just because of your profession. You are allotted a set amount of skill points per level to boost up a selection of skills.