As far as I can tell, 1947 LLC doesn't take any payment or handle any materials. They are simply an outlet through which non-US customers can place orders for MultiCam. I don't really understand it, but here's how it worked for me when buying MC fabric:
You need to submit a purchase order, addressed like this:
1947, LLC Representing
Brookwood Companies inc.
25 W 45th St.
New York, NY, U.S.A.
10036
When they receive this, they forward it on to Brookwood and a sales rep from there contacts you. The payment is taken by Brookwood and then they ship the fabric. The only further communication that you need to have with 1947 LLC, is if you need to change anything on the original PO. All PO's, including revisions, must be sent through them.