There was a "find" I think on another forum where someone had got one purely by chance. They didn't know what it was but they sent pictures to V-Mach who confirmed it was a Venom one. There were a few made to special order.
I have seen a Free-ads sale of a factory standard HW80, Tasco 3-9x50AG and the same stock or a reproduction. It was £500 I think. I was tempted just for the stock - I'd sell the scope and rifle probably. This was a couple of years back I think. They are out there but very rarely up for sale.