Let's be logical then.
Assuming reviews are representative of the majority of the gaming population (which they are, but not representative of everyone). Say, for number's sake, that they represent 80% of the gaming population and you don't know if the reviews apply to you or not.
Since every review hated TWZ then there's a 80% chance you'll hate it too (as that's the chance you are in the gaming population they represent). And let's say that you don't want to play a game you hate (giving it a monetary value of $0 as you're not willing to pay for it). Then only buy the game if the price you're going to pay reflects this preferences, i.e.
0.8*0 + 0.2*(value you'd pay if you'd enjoy it unlike most people) = price
What I'm trying to say in less numbers and more words is: if you really want to try a game that is acclaimed as bad by anyone with a voice in the gaming community, you might want to wait for a *very* good sale, and not just some people around here that might have it 30% off tops.
Considering it got removed from steam on the basis that it "did not live up to the standards steam sets for the video game industry" and the fact that now it's back doesn't tell anyone anything? They fixed things and no one wants to try it because their previous mistakes have already etched 'AWFUL' on to everyone brain. I am not siding with WAR Z but some times it pisses me off when people can't make decisions for themselves.
Forge Steam gift
Far cry 3
Half life 2
Killing Floor [Complete]
Chivalry Medieval warfare