Kinect Sesame Street TV and Kinect Nat Geo TV will be US $29.99 each and available Sept 18th.
Some additional information about the two-way interactive programming from the press release we sent out today:
With these all new 2-way TV experiences from Kinect for Xbox 360, your child can now jump inside his or her favorite television shows and engage, interact and learn like never before. “Kinect Sesame Street TV” and “Kinect Nat Geo TV” will each cost $29.99 USD/2400 MS points for eight 30-minute episodes and will be available at your local retailers and also via download when you purchase a Season’s Pass on Xbox LIVE. Individual episodes can also be purchased for $4.99 USD/400 MS points
We also announced that Nike+ Kinect Training is US $49.99 and available October 30th.
Update: Corrected pricing for Sesame Street and Nat Geo