I don't know why people are eating this up. It's a total reskin, who wants to play reskins? Only people who suck the richard of developers. If Valve did the same thing to something like Half Life 1 there would be people who eat it up like idiots and then there would be people laughing at them.
I'm sure you realize that they remade the entire game with modern graphics, right? It's also on console with online Co-op, which the original didn't have since it was a launch game and Xbox Live wasn't fully in motion yet. You're enjoying the old game with some new features, the option to play in classic or modern look, recreation of maps. You're paying for the nostalgia with the modern enhancements, which you can not tell me you don't hear people going "I'd love to see this old game with modern graphics. :D"
I don't know. I wouldn't buy them. Just not worth a big pricetag. If they were like really cheap, maybe.
Didn't you blurt out $60 the other day, and someone told you it's $40? That's why it's worth it. You're not paying full price, and you get the nostalgia mentioned above.