The skeleton Caveys were an edition of only 6 for press and reviewers. One was up for grabs as a competition prize. See their review here:

Andy’s review on Toysrevil.com

Video review (and win a skeleton Cavey of your own!) on Toybreak ep 125 (around 39 mins in)

See Johns video review on Spankystokes.com

The Mohawk skeleton Cavey was a special request from Spankystokes.com