I believe they were having trouble getting good quality gourds and I read somewhere the Lady who owns Strambach was retiring.
I have 2, one I bought online about 2 years ago and as far as the online shops go it was the last one available and cost about £300, and I have another that I bought on ebay last year. The seller didn't realise it was a Strambach, I could tell straight away it was due to the shape of the meerschaum bowl and the colour and shape of the stem. Anyway I paid £60 and it was a bargain as it had hardly been used and came with a nice wooden stand.
Ebay seems to be your best bet although I think I've only seen 2 or 3 on there in the last couple of years.
Here's a picture of the one I bought online
And the ebay one
And this one's a Fikri Baki that was a LOT more expensive than the Strambachs but these are readily available and are about the best you can get when it comes to gourd calabashes.
Chris