Let's Make Robots!

where can i find these vex pieces?

okay, I have been scouring google trying to find the parts for the vex rcr mini walker crab thing, which should be displayed.

all the results I have found have been things like press announcements and demo robots built witgh this stuff, and none of it recent.

I personally want to build that walker, obviously with some extra personal touches added on, but I just cannot find the parts. every place seems to indicate that they were released, so did I just miss a limited run component or something?