UPDATE: Sold one pair of 16s, still have one 15 and one 16.
I have three pair of boots, 2 size 16s and 1 size 15, for sale. Trust me I know what a pain they are to find. Bought them as a lot from someone and kept the pair that fit me best. They are former rentals, from RMI I believe, and are definitely used. That being said, I used mine up to Camp Muir on Rainier a couple of weeks ago and they did the trick just fine, I'll be using them in my summit attempt next week. $75 each plus whatever it takes to get them to you.