I got it for $47 + $10 promo credit after, so I'm not mad but that was fast! I've beaten it and can say if you like god of war and the theme of basing it loosely on Dante's Inferno then it's def worth $46. I've already started playing New game+ on a higher difficulty so I'm getting my $$ worth.
As for replay, other than newgame+ and difficulty, they are adding a multiplayer in April that actually looks interesting. if they pull it off well I'll be playing a lot of that. But I believe that's DLC no idea on cost. But I'll prob get it if it's cheap enough, considering the deals I got on the game I might break even (as in equaling $60 retail price) and still own all the DLC which would be nice.