The game isn't out for another 2 weeks. How do you actually expect anyone to give you an honest answer to that question? We can't form an accurate opinion of what it's worth because we haven't played it.
The only thing I can tell you is that paying $60 is foolish. If you have a PC that is fit for gaming, you can get it on Steam for just $45. If you want it on console, go pre-order on Amazon.com. They have the 360 and PS3 versions at $55 instead of $60, and they're giving you a $20 credit to use on a future game purchase you make from them.
So only from the perspective of getting a good deal, no, you shouldn't pay $60. But whether or not the game is worth buying on the basis of it being a good and/or lengthy game... Again, it's not out, nobody can accurately give an opinion on that yet.