I'd say it's definitely worth $60. The story isn't that great but the fun factor is through the roof! It's probably the largest sandbox-styled game I've ever played, too. Seriously, you'll never get bored of it. I've played dozens of games since I put JC2 down and I still continuously think about going back to it instead of playing the new games. It's just that good!
With that being said, it has been out for quite a few months and I'm sure it'll be going on sale for rather cheap soon with Black Friday, Christmas and Boxing Day all around the corner. You may want to hold off a month or so because I'm sure it'll drop in price.