Hi Tim and Alastair, Here are some examples of videos of multiple interviewees as a way to decide on a budget bandwidth:
This clip is in the 3-4k ballpark plus the cost of shoots. http://vimeo.com/40440053
Post production cost is about $ 1500 plus the cost of shoots http://vimeo.com/40280793
A simpler setup, cheaper shoots. $ 1500, but the shoots would be around $ 700 instead of $ 900. http://vimeo.com/26301450
This is around the $ 3k ballpark for the edit, and about $ 1200 per shoot. http://vimeo.com/44229777