Because it is one of the highest ranking of the Neofinetias according to the professional judges. It's like Kinbotan where it's rarely available for sale.
I'd love to hear what others have to say about this clone, I'm not familiar with it so I want to know what's so special about this clone to be ranked so high above other clones
Higuma has the yellow transparent center stripe. Meaning the top leaf that comes out always stay yellow in the center. Also, it has the true ruby roots. Not kinda purple, bright pink, deep red, roots. True ruby colored roots. Also, if it's one of those that can only be propagted via division and not from seed, it also increases rarity and price. The picture in the auction is not very clear so it's hard to see how cool this plant really is.