https://www.youtube.com/watch?v=Y8kvDiu48JE
http://www.bricklink.com/catalogPG.asp?S=5002125-1
Seems like it was never made widely available (yet?) Only one ever made it onto Bricklink, I didn’t see any active listings on eBay or other online outlets, and the video says they were going for ~$100 back in October (when they apparently were given out at KidsFest.)