Thanks very much for the helpful replies.
Daniel S, I have several of the Landberg pieces in this series myself which I have purchased much more in line with the prices you suggest, but I have never seen one this big (15"). Do you think the price is unfair?
Carol, thanks for the personal perspective. My only references are the books most people have and what I see on the internet. I have sometimes purchased very nice glass for very little, but never anything very large or very complex—and often with one kind of small flaw or other. This is why I am looking at a dealer. And as I'm sure you know, prices vary wildly across the international spectrum.
Incidently, I have been to New Zealand and it was a lovely place, with wonderful people (rather like the English, but much warmer).
Best to you both