Resmed........S9 Auto 25 vs S9 vpap auto (both s9 series)

DEAR my friends,
I am a OSA patient living in Turkey.
I had been using respronics bipap auto , It needed repairment , i decided to buy a new device, and l have chosen Resmed.
I went to dealer in my city and asked for resmed's new auto bilevel model.
They gave me S9 series Auto 25 (it is not miss type S9 SERIES), it is auto bilevel device.
I came home and tried to search internet to find the price of the device in USA or CANADA.
But, I could not find my device in USA and CANADA.
I found the model with the name of S9 Vpap Auto, they explained the model as the improved type of S8 Auto25,
I checked the specifications of S9 Auto 25 and S9 Vpap Auto, as far as i realised, they are same devices.
Is there any boyd who will give me some more details about subject?
If this is the case , same device with two different names, what should be the reason ..?
Thanks for your kind helps...

They appear to be the same thing. In the US they are sold as the S9 VPAP auto and in other countries the S9 Auto 25.
Probably can't find a price here in the US because that model isn't sold under that name but you can get an idea by checking the price for the S9 VPAP Auto.
I found info here about it but no prices of course. You might check some UK suppliers for price..they might have it.
http://www.resmed.com/epn/products/s9_a ... nc=dealers