Well, this version is much more rare.
PalSoft went bankrupt and PC Engine Fan made offers to its fellow subscribers to order this game through them.
So in terms of distribution, this is much tougher to get. The ones in the stores you see at Japan are pretty much all for the first pressings, i.e. the PalSoft ones.
This version has a different instruction book page (last page), and the hucard holder is the SF2/SystemCard style versus your normal Hucard case style.
Been searching for this one forever so I am psyched to finally snag it
The PAlsoft versions are widely available for $100-$150 but I've yet to seen this version come up.