| I've played it for quite some time (I've never made it past level 150 or so w/ any one character, but yeah, I like the game) and I really enjoy it. I like the missions system, and the dungeons kick ass as well once you get there. Having always been a Star Wars, I'm a sucker for the genre, and I wish they released more quality sci-fi MMO's like it(quality from launch, not two years in ><).
BTW, the "9.95 for upgrades" has been around since they started letting people play for free.
edit. regarding the complexity, it is very daunting at first, my reccomendation would be to go to the official forums and the class specific boards and read up on some suggested builds and such, lot of info there | 