Old ones exist, but it is a discontinued model. It is akin to asking about buying a new 2015 vehicle. You can hunt down lightly used ones, and a store might have an old one gathering dust rather than sold, but they are no longer produced and becoming ever less available.
Read this post.
For only a little more than those used to cost, get a Djinn. They're like the B Series Pro, but a bit better, with better fasteners and metal end caps, a bit more responsive, more high wind options, etc.