I can't believe people are paying full price for this. Definitely a sale item, seeing as it's just a glorified expansion pack.
Anything to back that up or is that just your opinion?
I can't recall an expansion pack that had more content than the original (maybe the Civ games?). Back in the days of Quake/Duke3d an expansion was often just 2-3 new weapons, maybe a couple/three new emenies and about a 1/3rd of the maps of the original.
If you bother to try the demo I'd like to hear what you think of it then, as it is, just sounds like you are jumping on a anti-l4d2 band wagon to me.