Roughly how long is the game and are there any incentives to play through it again?
 
I've been wanting this for a long time and now that I see it's only $20 I'm thinking of getting it but want to make sure it's not something I can just rent and get through in a weekend.

It's a pretty meaty game.  I don't think there's any major incentives to replay, but you might have fun doing it anyways.
 
But you should definitely fucking buy the game!  It's worth $60 if not more...  You probably couldn't get through in a weekend even if you were the master of games.

You probably could beat it in a weekend, but you could beat most games in a weekend if you really wanted to.
It's long enough, and definitely worth the money. There's also some DLC (I think.)

" You probably could beat it in a weekend, but you could beat most games in a weekend if you really wanted to. It's long enough, and definitely worth the money. There's also some DLC (I think.) "

I am astounded you even need to ask such a question.   
Its $20 the game NEEDS you to buy it!!!!!!
Buy it!
Buy it! 
 
The game will haunt your dreams if you don't seriously! 
As an RPG it's pretty long but for $20 it's like your stealing it... Sorta :/

graphic is so-so, while sometimes it looks beautiful and like a water painting, sometimes it look like a ps2-title in HD...

I WANT VC!! :(!!!!! GIVE ME MY VC!! I'VE WANTED IT SINCE IT CAME OUT BUT I CAN'T FIND IT ANYYYWHERE!!! 

But if you do the story+personal missions, perhaps 20-25 hours long?

Yeah, it really is a steal at $20 isn't it? Now only if I can find it...

" graphic is so-so, while sometimes it looks beautiful and like a water painting, sometimes it look like a ps2-title in HD... "

 
I borought this game from a friend and intend to play through it this week. It is one of those games i missed because i didn't have a PS3 at the time. 20-25 hours sounds pretty good! I already did the first 4 missions and i like the game so far...