IDK , but just in general, I believe that cloners try to copy and market primarily the most popular (and easiest to pass off ) merchandise .
Doubt there's a huge market for the GK Plus and those buyers might be more discerning than the norm .
Just looking at Ebay sold listings , seems like 3V version goes for ~$500 to 700 and the 4034 for ~$200 . Old "vintage " O1 and Carbon V , somewhere in-between .
3V prices are ridiculously high and the 4034 is already practically a clone, in quality of steel , IMO .