Source : Le "AMA" de Rocket sur reddit (le lead designer)
http://www.reddit.com/r/dayz/comments/1vwby6/recap_of_rockets_ama_filtered_for_only_dayz/
"The price is based on other games in the market, the cost of running servers and the central architecture, etc... It's just high enough to discourage some people, but not to high that people get very upset. I think it's been a great starting price. It will get more expensive. I'm highly resistant to sales, because each sale results in costs for us running servers and such - so it's not like a single player where there is no variable cost."
Le prix de l'alplha est prévu pour décourager un certain public, mais le jeu sera au prix du marché à sa sortie (entre 30 et 50 )