Gene you're right, duty and tax is what makes the Chamonix quite a bit more expensive for me. Camera body + lensboard + shipping = 918 USD, to that I'd have to add 4,2% import duty = 956 USD, and to that amount 20% "import VAT" = 1,147 USD. In Euros this is about 860.
On the other hand, the Euro-Pound exchange rate is quite favourable at the moment if you live in a Euro-country, that's why 425 GBP equals only 472 EUR (No duty within the European Union). Ok, to this amount I'd have to add shipping but I assume it won't be that much from the UK to Austria (certainly less than from China), and I don't know if a lens board is included in the price.
Hmmm... I just notice I obviously made some errors in my initial post calculations or now... or the exchange rates changed since*. Anyway, what I'm trying to illustrate here is that basically the Shen Hao is really quite a bit cheaper for me than the Chamonix (in fact almost half the price). lilmsmaggie may be right in that there are several re-sellers of Shen Hao equipment (for Chamonix I was only able to find one dealer in France but they are quite expensive, 975 Euros + shipping for the Chamonix) so accessories might be easier to obtain, but frankly this is not a major concern for me. As suggested by Barry I plan to start without many accesories and only one lens, I think I'll get a 150mm which should be a rough equivalent to the 80mm lens which I use on my Mamiya 7.
What it comes down to is I like the "looks" of the Chamonix a bit better and many people seem to love that camera so one could say it's a tried and tested model, while the Shen Hao is a new model (it is not even featured on the official Shen Hao website) and I have not read any reports yet by people who actually use the camera. But I think it's really a bargain and from what Scott wrote I gather there is no major drawback to it that would justify to pay the higher price for the Chamonix. I also figure should I get the Shen Hao and truly hate it (I highly doubt it) I could probably sell it again without much of a loss.
*) Edit: I forgot I'd have to pay 15% UK VAT when ordering from there, so the price for the Shen Hao including VAT would actually be 488 GBP which equals 542 EUR (+ shipping).