Naruto Shippuden Boxeset 1?

I doubt the website made a mistake. There is already a Box Set which includes episodes 1 to 13: a href="http://www.amazon.com/Naruto-Shippuden-Box-Set-1/dp/B002S4DOA4" rel="nofollow"http://www.amazon.com/Naruto-Shippuden-B…/a and the following Box Sets have 13 episodes each.