Even though The Battle of Prokhorovka book has been released, it is still available through Amazon.com for $28.43: Buy from Amazon. The list price on the hardcover is $44.95. I have no idea for how long Amazon.com will continue to sell it at this price.
The chapters for the book are listed in this post:
What else is in the book (besides words) is listed in this post:
The reason why I wrote this book is discussed in this post:
The book can obtained from Stackpole at: Stackpole Books
Or from Amazon.com at: Buy from Amazon