Solid (or even multiple part) "spirit of" figures aren't hard to create actually, so generally if you see one you've NOT heard of it's probably a big ole fakey.
There's resins that, without even tinting, will turn out that hazey blue-green of holo/spirit figures... Some of them are pretty cheap resins too, and would result in some pretty cheap figures.
But that was one Bogus auction for sure.