Sorry, I forgot that I'm not allowed an opinion.
No, not really. An opinion from someone who hasn't even experienced what their commenting on isn't worth anything.
It's like if I asked some guy if the food from some restaurant was good and they said "No it sucks, I couldn't even get in the door because it was too busy" That doesn't tell me jack stuff if the food was good or not, just that there was a big waiting line.
Saying a game isn't worth it just because it costs more than the original is a dumb comment. Almost all games are released at 60 dollars, am I going to tell you they all suck? No because I didn't play any of them. It's ok to say "It's not worth it to me, I don't like puzzle games and 50 bucks is too much for me to spend on 7 hours" that's fine, but don't tell someone who is asking that it sucks just because it's too much for you to spend.
But am I a huge Portal fan? Of course. And does that make my opinion biased? Sure does. But I have yet to see anyone in this thread who has played the game and said it's not worth it. The only people saying it isn't worth it haven't even played it.