This is in many digital formats, such as pdf, plain text, kindle, epub, etc.
Tomorrow it will be available on the Kindle if you choose to wait.
The digital versions are $2.99
You can go here to purchase it now in paperback or wait until January 7th to purchase it on Amazon.com
This is createspace's website. You will have to open up an account in order to purchase BANG in paperback.
The Paperback version is $16.00
I will post more as It starts coming out in paperback on Amazon.com.