Just found out about DayZ, and I have a couple questions.

I'm just wondering what exactly this game is worth to you guys. I don't own ARMA at all, and am considering buying the bundle off of steam ($29.99) to play this mod.

What I'd like to know is:

How many hours on average do you think I could happily pump into this mod/the game?

What is the game-play like? (Are there a ton of PKers out there that just shoot on sight?) I don't want a glorified huge open world PVP game.

And lastly, strictly personal question, do YOU think it is worth it to buy only being interested in the MOD?