All around difficulty getting DayZ to work

[All around difficulty getting DayZ to work]

Dayz commander is the worest launcher for dayz,I suggest you use a different launcher

[what do i need to play dayz]

I really don't want to pay 29.99 for co. Can i just buy Arma oa for 19.99$? Will that work for offical severs?

[Stand alone Questions.]

As They comfirmed theres going to be a standalone verison of dayz. People say its 100% there going to be done by the end of the year. Which means by januray comes. Is this true? Also am I going to need arma with the stand alone? Is the standalone going to be alot such as 40$+? Anyone have a estimate of how much it cost.