It would be hard to price it without inspecting the rifle or seeing detailed photos, and even then I don't know the market in Oz.

All I can say is it's a great caliber in a great platform. Also, I'm glad to hear of another W&S that's proud enough to wear the W&S name. They are great rifles. No boxlock is better. Here's mine:

http://forums.nitroexpress.com/showflat.php?Cat=0&Number=149258&an=0&page=0#Post149258

Proudly wearing the name, and a very late one. I wouldn't be surprised if this was nearly the last rifle out of W&S.

So my advice is to go for it!

Curl