Coming from BioWare...did we expect any different?
I have just finished my 3rd run through and still not bored of this masterpiece. With lots of different decisions and different endings each time, its pretty hard not to.
Its worth the full price just for the actual content..easily racking up 40 hours with the main story, side quests and exploring each system in depth. There are a number of classes you can be and the path of "light/good" or "dark/bad" so you will want to play this through more than once.
The story is one of the main values of the game, it is so in-depth and detailed you actually get lost in its very own world.
A must buy for any 360 owner and one that will last a long time!
Bring on the next part of the story i say!