I am going to argue that this is partially due to two reasons:
1) They have a greater quantity (self-intuitive).
2) They are more often sold directly than auctioned off.
I'd like to note that I could be very well wrong on the second point, but that is what I've personally observed (it is not based on data gathering). When people try to sell their products in these waters, they often look for past trends/sales and go from there. Therefore I think that there is room for growth here by either attempting to auction them off or by targeting higher sell prices (0.55 then 0.6 etc.). Do you by any chance have more originals or is this *it* for now?
Yep, much higher quantity (around 1300) than the Silvers (250) and Golds (100). There is definitely room for an increase in value with these, I'll agree with that, but as stated in your Point 1 - the high number produced makes these pretty easy to find for sale, and the long standing pricing of ~0.5 BTC just doesn't seem to move much.
I may have a couple more stashed away
But keeping them back until the Moon Bars have been released. Would like to see how their appearance affects the value of all other Kialaras. We will soon see Once I receive the new Kialara Moon Bars, I'll stick one up for auction and see what happens
You managed to secure one?More than 1
I have several single bars coming, as well as a 2 bar set that I will have available for sale. 
