Yeah, the lightning cup was constructed differently and came in 2 pieces, may have been the reason for not doing a second run. I'll see if I have a pic of the lighting cup. I've update my above post with some pics for reference for you.
Special Cup
For shows.
So with the Lightning cup, it comes in 2 separate pieces. The base and the "glass effect" plastic bit with the lightning in.
As I said, it may be the reason why they didn't do a second run of this one.