Looking to setup your DayZ Standalone Dedicated server? Well I have a bit of bad news for you if you have a giant box at home waiting to be used. You cant. You have to rent from a certified provider and even after that you only have the ability to change the servers name and kick players. Useful for when you get tired of hackers but still lacks the great power that we had with the DayZ mod.
The development team decided to go with a hive infrastructure to run DayZ. Players can work a hosting provider to get there own server but because it is connected the central hive they do not have full access to control the server. It would simply be impossible to allow players to run there own server on there own hardware and keep the hive secure and protected. With that being said I would recommend looking at gameservers.com. Here are there prices for default setup. You can change slot sizes as you please but currently the minimum server slot size is 30 slots.
You can get a private server for a bit cheaper and have more access to admin tools. This will not be connected to the hive and will require players to manually connect to the server instead of a list. You may soon be able to setup a private hive with your own mods, configs, etc… but the developers are currently worried about factoring the community. Here is a video where they discuss private servers/hives.