4,950.- Euros according to online Sinar price list in the Netherlands. VAT is not included (but no pro has to pay that anyway). 6x6 Back is not included in the price because it is not available yet. If you buy it with 645 film back plus back-adapter (not needed for the 6x6 back) total cost will be 6,090.- euros. I expect the 6x6 film back to be under the price of 645 back with adapter.
there is an option to get the hy6 for free ...
if you find an person how will get only a sinar 75lv pack ..
the price (list from photokina) for the 75lv pack is the same as the
75lv with the hy6 as a bundle
the only thing you must extra buy is the filmpack with adapter