Well guys, the materials are the reverse of the Yoda materials which would be screen accurate: The Robe is a very rare natural silk and the cloak is an equally hard to find wool. This wool has a very unique weave of darker and lighter wool strands which give it the screen look. Both materials are quite expensive considering you need about 7 yards of each. Seems like the silk ran close to $28 per yard and the wool was about $19 per yard.
As for patterns, I am sorry that I can't give away a solid year of research, but if you contact Hermes, he will be happy to receive your fabric (or supply something quite similar), and create the robes for you. In the states, the inner robe and cloak will cost you roughly $280 for a seamstress to take your material and sew it all together for you. Hermes can take your measurements and create the garments for you.
Once the patterns came together, we discovered that the appropriate sections did in fact, appear exact for Yoda's costume.......which led us to believe the original Yoda robe was an unfinished old ben robe without the trim etc..... Sure enough, when I set the mannequin at 26-28" this portion of the old ben robe is perfect as long as the sleeves are shortened. Hermes can also provide you a Yoda costume.
Hermes and Myself decided about 6 months ago, that we would not give out the patterns. You just have no idea how much research and development was involved in this endeavor. Hermes is a serious costume designer and part of our agreement was that he would keep the patterns for himself to sell costumes for a very reasonable amount. You won't end up spending $500 on this Yoda costume, though I would pay it in a heartbeat for the Old Ben robes. We haven't set a price for the costumes, but we are currently discussing it. He has to do a couple of these to see what kind of time and materials he has to give up for a costume like this. Plus he does need to be compensated for it as this is his only business. You should see his other works. Simply stunning. This is not a for sale thread or even an interest thread, but a showoff thread. In the event that a costume becomes for sale, you will see it offered in the junkyard.
I hope that answers your questions for now. Please contact me her or via PM for further questions.
Dave