Despite being advertised by both Beast Kingdom and Diamond Comic Distributors at SDCC 2017 as a Previews World Exclusive, they are actually only available for sale at Thinkgeek.com and labeled as a Think Geek exclusive. While it's great that you can track them down, and as of this post they are in stock, it's troubling that as the new North American distributor replacing Blue Fin Group, Diamond Comic Distributors seems to have no clue how the Beast Kingdom line is going to be distributed. For anyone that has tried ordering these products through the Previews World Catalog, it's spotty at best and ridiculously hard to find these "exclusive" items that are much easier and more reliable to get from other sellers like Bigbadtoystore.com.
Click here to order Holographic Darth Vader
(which does light up).
Click here to order the electroplated C-3PO and R2-D2
set, which also have all the electronic functions from the base set.