Welcome to Bachido, Carl!
I’m sure you will find this place useful in your shamisen journey. By the way, do you happen to know Noriko Tadano? An amazing shamisen player living…somewhere in Australia (I forgot exactly where)
Anyhow, Nitta san is asking $4,171 (330,000 yen) for the K-02 shamisen.
And as Kevin says, I would humbly recommend that you check out my book Shamisen of Japan - http://bachido.com/products/shamisen-of-japan.
Actually, I would also say a better way to start learning the basics would be to take the free shamisen crash course (http://bachido.com/learn/basic/crash-course-1/chapter-1). That is an easier way to get basics under your belt before using the book.
Glad to have you here! 
Karl: Indeed! It will be the first of many! (Started preparing the Sakura course today!) What’s more, when Nitta san comes here next week, we’ll be hitting the studio, where we’re gonna bust out as many instructional courses as we can. 