hi Kent,
at the moment only 1 SDI card can be installed, the normal SD SDI card is a singleinput card,
there is ongoing research for cards with multiple inputs, the Hippo is very specific with drivers so most likely the result you get with other cards might dissapoint you.
Same goes for the HD SDI card, 1 input, either SD or HD.
For costs, in Sweden, you need to consult with Peppe.
BTW, we are going to do a live tv show over here in Finland where we intend to run live HD cameras through a Hippo v3 HD and straight out broadcasted live on national tv.
We have done this already with SD resolution with superb result.
Here is a link to the story:
http://www.green-hippo.com/index.php?op ... &Itemid=41Johan West