The pictures speak for themselves. At the time of writing (December 2011), you can find plenty of these packets on eBay — still unused. This reflects the fact that unlike most Action Transfers, they were clearly identified as "collectable" from the start.
The Collection was available in a wide variety of languages. Here's a French example:
As well as collecting the six packs, you could also buy the wallchart:
The wallchart included a strip of four extra transfers:
Here are the six sheets (in numerical order):
Picture Credit: The SPLAT Scan Archives
© Tom Vinelott 2016