New ZX6-R's MSRP is 13,199...
Anyhow. Ninja 250's MSRP will go up, too, once Kawasaki introduces FI to it as in European and Japanese markets. I predict $500-$1,000 more.
The Ninja 250's are already FI in Europe and Thailand. http://www.motorcycle.in.th/article.php/2008-Kawasaki-Ninja-250R-Supersport