I reckon the $175 for a 1/48 Resin Gunstar is worth it, that's quiet a bit of resin there.
Detail level looks great too.
Remember that the gunstar is not a small craft either. So it works out to a decent sized build in 1/48.
BTW, I doubt that there will be many more options or other kits of the Gunstar out there. All the others I know of are smaller.
Why waste your bucks on an inferior recast that would only spoil your fun of building the kit??