Don’t know if this seller is 100% legit, but discovered this guy on Amazon while looking for the Neca terror dog. Supposedly the original terror dog statue. Looks a little beat up, but still looks cool.
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Seller information lists it as “The Prop Store” and founder Stephen Lane. Also claims to have a “Prop Store” COA.
It doesn’t match the one screencap he posted but it could be the other statue, have to poke around more to confirm.
I searched around for their actual website and came up with this: http://www.propstore.com/products.htm?keyword=ghostbusters
Looks like they have a few other things from the movies as well, including a statue of liberty.
it’s legit. the head came from richard edlund’s personal archive. it’s actually the vinz head, which is different from the zuul head. i had the chance to pick it up for way, way, WAYYYYYYYYYYYYY less after it went unsold from a PIH auction a few years ago. kicking myself big time now…
Ive been toying with the idea of this for a few weeks now! Im guessing UK shipping would kill it stone dead though 
I suppose I can ask…
They have a place in LA and London. I don’t know which location the item is at, but it might not be as bad as you think.
On the actual website there is an item location indicator beside the purchase button,looks like the dog, libby, and the unused door logo are in the states and all the paper items are across the pond.
well, it’s styrofoam, so at least you have that going for you with the whole shipping thing. 
There’s a 1:1 scale terror dog head on ebay right now as well
Sorry to get off track but the one your refering to is the most amazing sculpt detail wise I have ever seen…the teeth and mouth are incredible …And it is almost life size …
If I could afford it that thing would be mine!
Except that the auction is a “preorder” and the pictures are of “the last one that sold”. Been seeing more and more high end props like that sell on ebay as “preorders” or “build on demand”. I wouldn’t trust any of them with any money until I saw the item I’d actually be buying.