Thanks both for your advice. I guess I am over thinking the materials, I just want to make sure I at least know what the material cost is so I can cover it.
I never thought of asking the gallery. I might give that a try. If that fails, I am guessing the $300 range sounds fine. I sometimes print at 8x8, but I like the 11x11 size. I didn't think that was too odd.
The Keith Carter comparison is somewhat in jest. He is obviously well recognized, respected, and a master printer. None of which compares to me (Though I am happy with my prints at least).