Have you done the Virtual Ticket?
Blizzcon is the big reveal. This is when our game grows, or the company throws out new concepts to an eager crowd. I can imagine that Blizzcon will define the next major patch (4.3) coming out. Since this expansion is about the elements, I am guessing a water raid encounter to be coming soon. (Back to Vash'jir we go) The chance to see this new environment and bring that to you sounds exciting!
How about the in-game rewards? Oh sure! When I first saw the bear mount appear in Shattrath, minutes after Blizzcon started, I was jealous. That was before the Virtual Ticket was available (IIRC). Spotting the flaming murloc while running my (dreaded) Fireland's dailies and he's spewing fire, I am jealous again. I want! (at 106 of 125).
My biggest problem is work. There is no way my employer is going to allow me to stream hours of video to my desk. I would absolutely need to watch the Instant Replay of the entire event. I am not sure I really have the time or patience to sit at my desk at home, after the kids are asleep, watching people talk (and not play Warcraft).
So what's it worth? I've mentioned before, that I thought the 'recruit-a-friend' mount is cool. I'd pay $30 for it; by setting up an account for my kids, then canceling it after the mount arrived. Would I pay $40 for a Blizzcon pet/mount?? I think that may be a bit too much.
How about you? Have you bought a Blizzcon Virtual Ticket? If so, will you do it again this year?