I was just in a Vault the other day and they told me they were all going up. Doesn't make sense because it doesn't seem like a lot of people are buying them. I have one pair left out of the four I used to have. I'll keep that pair because I really like them, but I think the cost drives people away.
I really like mine but haven't worn them much. I noticed today that the nose piece is slightly askew, causing an unblanaced feeling on my face. Once I get that dialed in, I love 'em. Getting them on F&F didn't hurt either.