From what I understand, Bwright wants to use color negative ECN 2 - 65 mm for medium format equipment.
http://motion.kodak.com/us/en/motion/products/production/index.htm
AgX say, 65 mm format is not really a popular size.
Our faculty wanted to buy from Kodak (our supplier of film) positive b&w Kodak 5302 - 35mm, with negative perforation. This array is passed Kodak offer. Kodak Company requires a minimum quantity of 30 rolls of 305 m.
I managed to get a single box, for samples, from Orwo. The price was almost double thet the price of Kodak 5302 positive normal (positive perforation).
I told it to expect that the price you ECN 2 - 65 mm to be a big one.
The second issue is the minimum amount you need to order.
The third challenge is waiting. Not a common product, is made to order.
And I'm interested from b&w Kodak positive that I can use on my camera to Pentacon Six 6 as a negative film -6 ISO. I think it might be easier if we tried to ask big planfilm?? 60 x 90 cm.
I have been testing positive b&w Kodak 5302 (35mm) and I am very happy.
http://membres.multimania.fr/georgegrosu/11 inalta rezolutie.htm
George